Optical imaging lens assembly, image capturing unit and electronic device

ABSTRACT

An optical imaging lens assembly includes seven lens elements which are, in order from an object side to an image side: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element. Each of the seven lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. The object-side surface of the first lens element is convex in a paraxial region thereof, and at least one surface among the object-side surfaces and the image-side surfaces of the seven lens elements has at least one inflection point.

RELATED APPLICATIONS

This application is a continuation patent application of U.S.application Ser. No. 17/140,918, filed on Jan. 4, 2021, which is acontinuation patent application of U.S. application Ser. No. 16/051,437,filed on Jul. 31, 2018, which claims priority to Taiwan Application107105878, filed on Feb. 22, 2018, which is incorporated by referenceherein in its entirety.

BACKGROUND Technical Field

The present disclosure relates to an optical imaging lens assembly, animage capturing unit and an electronic device, more particularly to anoptical imaging lens assembly and an image capturing unit applicable toan electronic device.

Description of Related Art

With the development of semiconductor manufacturing technology, theperformance of image sensors has been improved, and the pixel sizethereof has been scaled down. Therefore, featuring high image qualityhas been one of the indispensable features of an optical systemnowadays.

Furthermore, due to the rapid changes in technology, electronic devicesequipped with optical systems are developed towards multi-functionalityfor various applications, and therefore the functionality requirementsfor the optical systems have been increasing. However, it is difficultfor a conventional optical system to obtain a balance among therequirements such as high image quality, low sensitivity, desirable sizeof the aperture, miniaturization or required field of view. Accordingly,the present disclosure provides an optical system satisfying theaforementioned requirements.

SUMMARY

According to one aspect of the present disclosure, an optical imaginglens assembly includes seven lens elements. The seven lens elements are,in order from an object side to an image side, a first lens element, asecond lens element, a third lens element, a fourth lens element, afifth lens element, a sixth lens element and a seventh lens element.Each of the seven lens elements has an object-side surface facing towardthe object side and an image-side surface facing toward the image side.The object-side surface of the first lens element is convex in aparaxial region thereof. At least one surface among the object-sidesurfaces and the image-side surfaces of the seven lens elements has atleast one inflection point. When an entrance pupil diameter of theoptical imaging lens assembly is EPD, a sum of central thicknesses ofthe seven lens elements of the optical imaging lens assembly is ΣCT, acentral thickness of the first lens element is CT1, a curvature radiusof the object-side surface of the first lens element is R1, and a focallength of the optical imaging lens assembly is f, the followingconditions are satisfied:

1.45<EPD/(ΣCT−CT1)<5.0;

0.50<R1/CT1<3.50; and

2.20<f/R1<5.0.

According to another aspect of the present disclosure, an imagecapturing unit includes the aforementioned optical imaging lens assemblyand an image sensor, wherein the image sensor is disposed on an imagesurface of the optical imaging lens assembly.

According to still another aspect of the present disclosure, anelectronic device includes the aforementioned image capturing unit.

According to yet another aspect of the present disclosure, an opticalimaging lens assembly includes seven lens elements. The seven lenselements are, in order from an object side to an image side, a firstlens element, a second lens element, a third lens element, a fourth lenselement, a fifth lens element, a sixth lens element and a seventh lenselement. Each of the seven lens elements has an object-side surfacefacing toward the object side and an image-side surface facing towardthe image side. At least one surface among the object-side surfaces andthe image-side surfaces of the seven lens elements has at least oneinflection point. Each of at least three of the seven lens elements hasan Abbe number smaller than 26.0. When an entrance pupil diameter of theoptical imaging lens assembly is EPD, a sum of central thicknesses ofthe seven lens elements of the optical imaging lens assembly is ΣCT, acentral thickness of the first lens element is CT1, an axial distancebetween the object-side surface of the first lens element and an imagesurface is TL, and a focal length of the optical imaging lens assemblyis f, the following conditions are satisfied:

1.45<EPD/(ΣCT−CT1)<5.0; and

0.50<TL/f<1.80.

According to yet still another aspect of the present disclosure, anoptical imaging lens assembly includes seven lens elements. The sevenlens elements are, in order from an object side to an image side, afirst lens element, a second lens element, a third lens element, afourth lens element, a fifth lens element, a sixth lens element and aseventh lens element. Each of the seven lens elements has an object-sidesurface facing toward the object side and an image-side surface facingtoward the image side. At least one surface among the object-sidesurfaces and the image-side surfaces of the seven lens elements has atleast one inflection point. Each of at least four of the seven lenselements has an Abbe number smaller than 40.0. The first lens elementhas positive refractive power. When an entrance pupil diameter of theoptical imaging lens assembly is EPD, a sum of central thicknesses ofthe seven lens elements of the optical imaging lens assembly is ΣCT, acentral thickness of the first lens element is CT1, an axial distancebetween the object-side surface of the first lens element and an imagesurface is TL, a focal length of the optical imaging lens assembly is f,and half of a maximum field of view of the optical imaging lens assemblyis HFOV, the following conditions are satisfied:

0.50<EPD/(ΣCT−CT1)<8.0;

0.50<TL/f<1.50;

1.0<f/EPD<1.90; and

0.14<tan(HFOV)<0.53.

BRIEF DESCRIPTION OF THE DRAWINGS

The disclosure can be better understood by reading the followingdetailed description of the embodiments, with reference made to theaccompanying drawings as follows:

FIG. 1 is a schematic view of an image capturing unit according to the1st embodiment of the present disclosure;

FIG. 2 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 1stembodiment;

FIG. 3 is a schematic view of an image capturing unit according to the2nd embodiment of the present disclosure;

FIG. 4 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 2ndembodiment;

FIG. 5 is a schematic view of an image capturing unit according to the3rd embodiment of the present disclosure;

FIG. 6 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 3rdembodiment;

FIG. 7 is a schematic view of an image capturing unit according to the4th embodiment of the present disclosure;

FIG. 8 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 4thembodiment;

FIG. 9 is a schematic view of an image capturing unit according to the5th embodiment of the present disclosure;

FIG. 10 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 5thembodiment;

FIG. 11 is a schematic view of an image capturing unit according to the6th embodiment of the present disclosure;

FIG. 12 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 6thembodiment;

FIG. 13 is a schematic view of an image capturing unit according to the7th embodiment of the present disclosure;

FIG. 14 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 7thembodiment;

FIG. 15 is a schematic view of an image capturing unit according to the8th embodiment of the present disclosure;

FIG. 16 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 8thembodiment;

FIG. 17 is a schematic view of an image capturing unit according to the9th embodiment of the present disclosure;

FIG. 18 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 9thembodiment;

FIG. 19 is a perspective view of an image capturing unit according tothe 10th embodiment of the present disclosure;

FIG. 20 is one perspective view of an electronic device according to the11th embodiment of the present disclosure;

FIG. 21 is another perspective view of the electronic device in FIG. 20;

FIG. 22 is a block diagram of the electronic device in FIG. 20 ;

FIG. 23 shows a schematic view of Yc62 according to the 1st embodimentof the present disclosure; and

FIG. 24 shows a schematic view of Y31, Y32, Y41 and Y42 according to the1st embodiment of the present disclosure.

DETAILED DESCRIPTION

An optical imaging lens assembly includes seven lens elements. The sevenlens elements are, in order from an object side to an image side, afirst lens element, a second lens element, a third lens element, afourth lens element, a fifth lens element, a sixth lens element and aseventh lens element.

The first lens element can have positive refractive power; therefore, itis favorable for providing sufficient light convergence capability so asto reduce a total track length of the optical imaging lens assembly. Thefirst lens element can have an object-side surface being convex in aparaxial region thereof; therefore, it is favorable for enhancing lightconvergence capability on the object side so as to obtain bettertelephoto effect and provide sufficient incident light in an opticalsystem having large aperture stop.

The second lens element can have negative refractive power; therefore,it is favorable for preventing image overlaps due to light rays withdifferent wavelengths focusing on different positions. The second lenselement can have an object-side surface being convex in a paraxialregion thereof and an image-side surface being concave in a paraxialregion thereof; therefore, it is favorable for light converging in botha tangential direction and a sagittal direction so as to correctastigmatism.

The sixth lens element can have an image-side surface being concave in aparaxial region thereof. Therefore, it is favorable for reducing a backfocal length of the optical imaging lens assembly so as to achieveminiaturization.

Among all object-side surfaces and all image-side surfaces of the sevenlens elements (the first lens element through the seventh lens element),at least one surface has at least one inflection point; therefore, it isfavorable for correcting peripheral aberrations and reducing the totaltrack length so as to achieve high image quality and compactness.Preferably, at least one surface of at least one lens element among thefifth lens element, the sixth lens element and the seventh lens elementhas at least one inflection point; therefore, it is favorable forcorrecting off-axis aberrations so as to flatten Petzval surface. Orpreferably, at least one surface of at least one lens element among theseven lens elements has at least three inflection points; therefore, itis favorable for enhancing the capability of correcting off-axisaberrations so as to further reduce the total track length as well aseliminate coma and distortion.

Among the seven lens elements (the first lens element through theseventh lens element), each of at least four lens elements can have anAbbe number smaller than 40.0. Therefore, it is favorable forcontrolling the light path so as to balance axial chromatic aberration,thereby improving image quality. Preferably, each of at least four lenselements among the seven lens elements can have an Abbe number smallerthan 30.0. More preferably, each of at least four lens elements amongthe seven lens elements can have an Abbe number smaller than 25.0.

Among the seven lens elements (the first lens element through theseventh lens element), each of at least three lens elements can have anAbbe number smaller than 30.0. Therefore, it is favorable forcontrolling the light path so as to balance axial chromatic aberration,thereby improving image quality. Preferably, each of at least three lenselements among the seven lens elements can have an Abbe number smallerthan 26.0. More preferably, each of at least three lens elements amongthe seven lens elements can have an Abbe number smaller than 25.0. Muchmore preferably, each of at least three lens elements among the sevenlens elements can have an Abbe number smaller than 20.0.

Among the seven lens elements (the first lens element through theseventh lens element), each of at least two lens elements can have anAbbe number smaller than 20.0. Therefore, it is favorable forcontrolling the light path so as to balance axial chromatic aberration,thereby improving image quality.

When an entrance pupil diameter of the optical imaging lens assembly isEPD, a sum of central thicknesses of the seven lens elements of theoptical imaging lens assembly is ΣCT, and a central thickness of thefirst lens element is CT1, the following condition is satisfied:0.50<EPD/(ΣCT−CT1)<8.0. Therefore, it is favorable for obtaining properaperture size and a sufficient amount space for lens elements so as toimprove the light receiving capability of the optical imaging lensassembly, thereby enhancing image brightness. Preferably, the followingcondition can be satisfied: 1.45<EPD/(ΣCT−CT1)<5.0. More preferably, thefollowing condition can also be satisfied: 1.55<EPD/(ΣCT−CT1)<4.0.

When a curvature radius of the object-side surface of the first lenselement is R1, and the central thickness of the first lens element isCT1, the following condition can be satisfied: 0.50<R1/CT1<3.50.Therefore, it is favorable for the object-side surface of the first lenselement having larger curvature so as to satisfy the need of telephotoshots within limited space. Preferably, the following condition can alsobe satisfied: 0.70<R1/CT1<2.80.

When a focal length of the optical imaging lens assembly is f, and thecurvature radius of the object-side surface of the first lens element isR1, the following condition can be satisfied: 1.50<f/R1<8.0. Therefore,it is favorable for obtaining a telephoto setup as well as maintainingthe total track length so as to achieve miniaturization. Preferably, thefollowing condition can be satisfied: 2.20<f/R1<5.0. More preferably,the following condition can also be satisfied: 2.80<f/R1<4.0.

When an axial distance between the object-side surface of the first lenselement and an image surface is TL, and the focal length of the opticalimaging lens assembly is f, the following condition can be satisfied:0.50<TL/f<1.80. Therefore, it is favorable for improving the resolutionof a magnified image and controlling the total track length. Preferably,the following condition can be satisfied: 0.50<TL/f<1.50. Morepreferably, the following condition can also be satisfied:0.60<TL/f<1.05.

When the focal length of the optical imaging lens assembly is f, and theentrance pupil diameter of the optical imaging lens assembly is EPD, thefollowing condition can be satisfied: 1.0<f/EPD<2.20. Therefore, it isfavorable for adjusting the size of aperture stop so as to control theamount of incident light, thereby further enhancing image brightness.Preferably, the following condition can be satisfied: 1.0<f/EPD<1.90.More preferably, the following condition can be satisfied:1.20<f/EPD<1.80. Much more preferably, the following condition can alsobe satisfied: 1.25<f/EPD<1.60.

When half of a maximum field of view of the optical imaging lensassembly is HFOV, the following condition can be satisfied:0.14<tan(HFOV)<0.53. Therefore, it is favorable for adjusting aneffective imaging range and improving the resolution of a magnifiedimage from a telephoto shot.

When the axial distance between the object-side surface of the firstlens element and the image surface is TL, and a maximum image height ofthe optical imaging lens assembly (half of a diagonal length of aneffective photosensitive area of an image sensor) is ImgH, the followingcondition can be satisfied: 1.20<TL/ImgH<2.80. Therefore, it isfavorable for balancing between compactness and a sufficient lightreceiving area to maintain proper image brightness.

When an Abbe number of the seventh lens element is V7, the followingcondition can be satisfied: V7<30.0. Therefore, due to a larger densitydifference between a high-dispersion material (low Abbe number) and air,it is favorable for the seventh lens element obtaining strongerrefractive capability, such that light is properly refracted within ashorter distance. Preferably, the following condition can also besatisfied: 10.0<V7<23.0.

When an axial distance between the second lens element and the thirdlens element is T23, and an axial distance between the third lenselement and the fourth lens element is T34, the following condition canbe satisfied: 0.05<T23/T34<1.0. Therefore, the axial distance betweentwo adjacent lens elements is properly arranged so as to be favorablefor lens assembling while reducing sensitivity. Preferably, thefollowing condition can be satisfied: 0.20<T23/T34<1.0. More preferably,the following condition can also be satisfied: 0.30<T23/T34<0.80.

When a vertical distance between a critical point on the image-sidesurface of the sixth lens element and an optical axis is Yc62, and acentral thickness of the sixth lens element is CT6, the followingcondition can be satisfied: 0.30<Yc62/CT6<7.50. Therefore, it isfavorable for correcting off-axis aberrations and reducing the fieldcurvature of the image surface. A schematic view of Yc62 according tothe 1st embodiment of the present disclosure is shown in FIG. 23 .

When a curvature radius of an object-side surface of the seventh lenselement is R13, and a curvature radius of an image-side surface of theseventh lens element is R14, the following condition can be satisfied:−1.80<(R13−R14)/(R13+R14)<0.50. Therefore, it is favorable foreffectively controlling the shape of the lens element close to the imagesurface so as to obtain telephoto effect and improve symmetry of theoptical imaging lens assembly.

When the axial distance between the object-side surface of the firstlens element and the image surface is TL, and the entrance pupildiameter of the optical imaging lens assembly is EPD, the followingcondition can be satisfied: 1.25<TL/EPD<2.0. Therefore, it is favorablefor balancing between a large aperture and a shorter total track length,thereby meeting the specification of a compact lens system with a largeaperture.

When the focal length of the optical imaging lens assembly is f, and acurvature radius of the image-side surface of the sixth lens element isR12, the following condition can be satisfied: 2.50<f/R12<6.50.Therefore, it is favorable for reducing the back focal length of theoptical imaging lens assembly so as maintain a compact size thereof, andthus the optical imaging lens assembly is applicable to variousapplications.

When an axial distance between the image-side surface of the seventhlens element and the image surface is BL, and an axial distance betweenthe object-side surface of the first lens element and the image-sidesurface of the seventh lens element is TD, the following condition canbe satisfied: 0<BL/TD<0.35. Therefore, a ratio of the back focal lengthto a height of the optical imaging lens assembly is proper forminiaturizing the optical imaging lens assembly so as to achievecompactness. Preferably, the following condition can also be satisfied:0.05<BL/TD<0.20.

When the focal length of the optical imaging lens assembly is f, and themaximum image height of the optical imaging lens assembly is ImgH, thefollowing condition can be satisfied: 1.90<f/ImgH<3.50. Therefore, it isfavorable for adjusting the effective imaging range and the field ofview so as to enhance the resolution of a magnified image, therebyobtaining better image quality in telephoto shots.

The optical imaging lens assembly further includes an aperture stop.When an axial distance between the aperture stop and the image-sidesurface of the seventh lens element is SD, and the axial distancebetween the object-side surface of the first lens element and theimage-side surface of the seventh lens element is TD, the followingcondition can be satisfied: 0.70<SD/TD<0.90. Therefore, it is favorablefor properly positioning the aperture stop so as to control the size ofthe optical imaging lens assembly, thereby preventing the electronicdevice equipped with the optical imaging lens assembly from overlylarge.

When the focal length of the optical imaging lens assembly is f, and thecurvature radius of the image-side surface of the seventh lens elementis R14, the following condition can be satisfied: |f/R14|<0.50.Therefore, it is favorable for adjusting the shape of the lens elementon the image side of the optical imaging lens assembly so as to reducethe incident angle on the image surface, thereby preventing insufficientbrightness in the peripheral region of the image. Preferably, thefollowing condition can be satisfied: |f/R14|<0.35. More preferably, thefollowing condition can be satisfied: |f/R14|<0.25. Much morepreferably, the following condition can also be satisfied: |f/R14|<0.15.

When the focal length of the optical imaging lens assembly is f, theaxial distance between the object-side surface of the first lens elementand the image surface is TL, the entrance pupil diameter of the opticalimaging lens assembly is EPD, and the maximum image height of theoptical imaging lens assembly is ImgH, the following condition can besatisfied: 2.0<(f×TL)/(EPD×ImgH)<5.20. Therefore, the arrangement ofoptical parameters in both an axial direction and a radial direction isbalanced so that it is favorable for improving the symmetry of theoptical imaging lens assembly so as to reduce sensitivity; also, it isfavorable for improving the photographing performance so as to allowutilizations in various technical fields. Preferably, the followingcondition can also be satisfied: 3.0<(f×TL)/(EPD×ImgH)<5.0.

When the curvature radius of the object-side surface of the first lenselement is R1, the focal length of the optical imaging lens assembly isf, and the central thickness of the first lens element is CT1, thefollowing condition can be satisfied: 0.05<(R1×R1)/(f×CT1)<0.85.Therefore, it is favorable for enhancing the relationship between thecurvature of the object-side surface of the first lens element and thecentral thickness of the first lens element, so as to obtain telephotofunctionality.

According to the present disclosure, a minimum value among all maximumeffective radii of the object-side surfaces and the image-side surfacesof the seven lens elements is Ymin. A maximum effective radius of atleast one surface among the object-side surface of the third lenselement, the image-side surface of the third lens element, theobject-side surface of the fourth lens element and the image-sidesurface of the fourth lens element can be Ymin. Therefore, it isfavorable for adjusting the size of lens elements so as to obtain aproper ratio of a light receiving area to an imaging area; also, it isfavorable for improving the symmetry of the optical imaging lensassembly so as to reduce sensitivity. A schematic view of Y31, Y32, Y41and Y42 according to the 1st embodiment of the present disclosure isshown in FIG. 24 , wherein a maximum effective radius of an object-sidesurface of the third lens element is Y31, a maximum effective radius ofan image-side surface of the third lens element is Y32, a maximumeffective radius of an object-side surface of the fourth lens element isY41, and a maximum effective radius of an image-side surface of thefourth lens element is Y42. At least one of the parameters Y31, Y32, Y41and Y42 is Ymin.

When an Abbe number of the first lens element is V1, an Abbe number ofthe second lens element is V2, an Abbe number of the third lens elementis V3, an Abbe number of the fourth lens element is V4, an Abbe numberof the fifth lens element is V5, an Abbe number of the sixth lenselement is V6, the Abbe number of the seventh lens element is V7, and anAbbe number of the i-th lens element is Vi, the following condition canbe satisfied: 50.0<ΣVi<300.0, wherein i=1-7. Therefore, it is favorablefor strengthening the refractive power of the optical imaging lensassembly so as to meet the requirements of high specification.Preferably, the following condition can also be satisfied:80.0<ΣVi<250.0.

When the axial distance between the object-side surface of the firstlens element and the image surface is TL, the entrance pupil diameter ofthe optical imaging lens assembly is EPD, and an axial distance betweenthe fifth lens element and the sixth lens element is T56, the followingcondition can be satisfied: 0.80<TL/(EPD+T56)<1.80. Therefore, it isfavorable for obtaining the proper axial distance between the fifth lenselement and the sixth lens element with a proper sized aperture so as toachieve miniaturization with a long focal length.

When an Abbe number of at least one lens element having positiverefractive power among the seven lens elements (the first lens elementthrough the seventh lens element) is Vp, the following condition can besatisfied: Vp<25.0. Therefore, it is favorable for controlling the lightdispersion for various imaging ranges. Preferably, the followingcondition can also be satisfied: Vp<23.0.

When the focal length of the optical imaging lens assembly is f, and afocal length of the second lens element is f2, the following conditioncan be satisfied: −3.0<f/f2<0.35. Therefore, the refractive power of thesecond lens element is favorable for correcting aberrations generated bythe first lens element so as to eliminate spherical aberration, therebyimproving image quality.

When the central thickness of the first lens element is CT1, and acentral thickness of the seventh lens element is CT7, the followingcondition can be satisfied: 1.70<CT1/CT7. Therefore, it is favorable forbalancing the central thickness of the lens element on the object sideand the central thickness of the lens element on the image side, so asto strengthen light convergence capability on the object side whileimproving aberration corrections on the image side.

When the focal length of the optical imaging lens assembly is f, and afocal length of the seventh lens element is f7, the following conditioncan be satisfied: −2.50<f/f7<0.90. Therefore, the refractive power ofthe seventh lens element is favorable for correcting aberrations so asto improve image quality. Preferably, the following condition can besatisfied: −2.50<f/f7<0.15. More preferably, the following condition canalso be satisfied: −2.50<f/f7<0.10.

When the axial distance between the fifth lens element and the sixthlens element is T56, and a sum of axial distances between every adjacentlens elements of the optical imaging lens assembly is EAT, the followingcondition can be satisfied: 0.15<T56/(EAT-T56)<3.0. Therefore, it isfavorable for controlling the light rays between the fifth lens elementand the sixth lens element so as to obtain telephoto effect.

When an axial distance between the sixth lens element and the seventhlens element is T67, and the central thickness of the sixth lens elementis CT6, the following condition can be satisfied: 0.30<T67/CT6<4.0.Therefore, it is favorable for providing better space utilization on theimage side of the optical imaging lens assembly so as to reducesensitivity and increase functionality. Preferably, the followingcondition can also be satisfied: 0.85<T67/CT6<4.0.

According to the present disclosure, the axial distance between thefifth lens element and the sixth lens element can be maximum among theaxial distances between each of the adjacent seven lens elements of theoptical imaging lens assembly. That is, the axial distance between thefifth lens element and the sixth lens element can be larger than anaxial distance between the first lens element and the second lenselement, the axial distance between the second lens element and thethird lens element, the axial distance between the third lens elementand the fourth lens element, an axial distance between the fourth lenselement and the fifth lens element and the axial distance between thesixth lens element and the seventh lens element. Therefore, it isfavorable for obtaining a sufficiently large gap between the fifth lenselement and the sixth lens element so as to correct aberrations.

According to the present disclosure, the aforementioned features andconditions can be utilized in numerous combinations so as to achievecorresponding effects.

According to the present disclosure, the lens elements of the opticalimaging lens assembly can be made of either glass or plastic material.When the lens elements are made of glass material, the refractive powerdistribution of the optical imaging lens assembly may be more flexible.The glass lens element can either be made by grinding or molding. Whenthe lens elements are made of plastic material, the manufacturing costcan be effectively reduced. Furthermore, surfaces of each lens elementcan be arranged to be aspheric, which allows for more controllablevariables for eliminating the aberration thereof, the required number ofthe lens elements can be reduced, and the total track length of theoptical imaging lens assembly can be effectively shortened. The asphericsurfaces may be formed by plastic injection molding or glass molding.

According to the present disclosure, when a lens surface is aspheric, itmeans that the lens surface has an aspheric shape throughout itsoptically effective area, or a portion(s) thereof.

According to the present disclosure, each of an object-side surface andan image-side surface has a paraxial region and an off-axis region. Theparaxial region refers to the region of the surface where light raystravel close to the optical axis, and the off-axis region refers to theregion of the surface away from the paraxial region. Particularly,unless otherwise stated, when the lens element has a convex surface, itindicates that the surface is convex in the paraxial region thereof;when the lens element has a concave surface, it indicates that thesurface is concave in the paraxial region thereof. Moreover, when aregion of refractive power or focus of a lens element is not defined, itindicates that the region of refractive power or focus of the lenselement is in the paraxial region thereof.

According to the present disclosure, an inflection point is a point on asurface of the lens element at which the surface changes from concave toconvex, or vice versa. A critical point is a non-axial point of the lenssurface where its tangent is perpendicular to the optical axis.

According to the present disclosure, an image surface of the opticalimaging lens assembly, based on the corresponding image sensor, can beflat or curved, especially a curved surface being concave facing towardsthe object side of the optical imaging lens assembly.

According to the present disclosure, an image correction unit, such as afield flattener, can be optionally disposed between the lens elementclosest to the image side of the optical imaging lens assembly and theimage surface for correction of aberrations such as field curvature. Theoptical properties of the image correction unit, such as curvature,thickness, index of refraction, position and surface shape (convex orconcave surface with spherical, aspheric, diffractive or Fresnel types),can be adjusted according to the design of an image capturing unit. Ingeneral, a preferable image correction unit is, for example, a thintransparent element having a concave object-side surface and a planarimage-side surface, and the thin transparent element is disposed nearthe image surface.

According to the present disclosure, the optical imaging lens assemblycan include at least one stop, such as an aperture stop, a glare stop ora field stop. Said glare stop or said field stop is set for eliminatingthe stray light and thereby improving image quality thereof.

According to the present disclosure, an aperture stop can be configuredas a front stop or a middle stop. A front stop disposed between animaged object and the first lens element can provide a longer distancebetween an exit pupil of the optical imaging lens assembly and the imagesurface to produce a telecentric effect, and thereby improves theimage-sensing efficiency of an image sensor (for example, CCD or CMOS).A middle stop disposed between the first lens element and the imagesurface is favorable for enlarging the viewing angle of the opticalimaging lens assembly and thereby provides a wider field of view for thesame.

According to the above description of the present disclosure, thefollowing specific embodiments are provided for further explanation.

1st Embodiment

FIG. 1 is a schematic view of an image capturing unit according to the1st embodiment of the present disclosure. FIG. 2 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 1stembodiment. In FIG. 1 , the image capturing unit includes the opticalimaging lens assembly (its reference numeral is omitted) of the presentdisclosure and an image sensor 195. The optical imaging lens assemblyincludes, in order from an object side to an image side, a first lenselement 110, an aperture stop 100, a second lens element 120, a thirdlens element 130, a fourth lens element 140, a fifth lens element 150, asixth lens element 160, a seventh lens element 170, a filter 180 and animage surface 190. The optical imaging lens assembly includes seven lenselements (110, 120, 130, 140, 150, 160 and 170) with no additional lenselement disposed between each of the adjacent seven lens elements.

The first lens element 110 with positive refractive power has anobject-side surface 111 being convex in a paraxial region thereof and animage-side surface 112 being convex in a paraxial region thereof. Thefirst lens element 110 is made of glass material and has the object-sidesurface 111 and the image-side surface 112 being both aspheric. Theimage-side surface 112 of the first lens element 110 has one inflectionpoint.

The second lens element 120 with negative refractive power has anobject-side surface 121 being concave in a paraxial region thereof andan image-side surface 122 being concave in a paraxial region thereof.The second lens element 120 is made of plastic material and has theobject-side surface 121 and the image-side surface 122 being bothaspheric. The object-side surface 121 of the second lens element 120 hasone inflection point.

The third lens element 130 with negative refractive power has anobject-side surface 131 being convex in a paraxial region thereof and animage-side surface 132 being concave in a paraxial region thereof. Thethird lens element 130 is made of plastic material and has theobject-side surface 131 and the image-side surface 132 being bothaspheric. The image-side surface 132 of the third lens element 130 hasone inflection point.

The fourth lens element 140 with positive refractive power has anobject-side surface 141 being convex in a paraxial region thereof and animage-side surface 142 being convex in a paraxial region thereof. Thefourth lens element 140 is made of plastic material and has theobject-side surface 141 and the image-side surface 142 being bothaspheric. The object-side surface 141 of the fourth lens element 140 hasone inflection point. The image-side surface 142 of the fourth lenselement 140 has two inflection points.

The fifth lens element 150 with positive refractive power has anobject-side surface 151 being concave in a paraxial region thereof andan image-side surface 152 being convex in a paraxial region thereof. Thefifth lens element 150 is made of plastic material and has theobject-side surface 151 and the image-side surface 152 being bothaspheric. Each of the object-side surface 151 and the image-side surface152 of the fifth lens element 150 has one inflection point.

The sixth lens element 160 with negative refractive power has anobject-side surface 161 being convex in a paraxial region thereof and animage-side surface 162 being concave in a paraxial region thereof. Thesixth lens element 160 is made of plastic material and has theobject-side surface 161 and the image-side surface 162 being bothaspheric. Each of the object-side surface 161 and the image-side surface162 of the sixth lens element 160 has two inflection points. Theimage-side surface 162 of the sixth lens element 160 has at least onecritical point.

The seventh lens element 170 with negative refractive power has anobject-side surface 171 being convex in a paraxial region thereof and animage-side surface 172 being concave in a paraxial region thereof. Theseventh lens element 170 is made of plastic material and has theobject-side surface 171 and the image-side surface 172 being bothaspheric. Each of the object-side surface 171 and the image-side surface172 of the seventh lens element 170 has two inflection points.

The filter 180 is made of glass material and located between the seventhlens element 170 and the image surface 190, and will not affect thefocal length of the optical imaging lens assembly. The image sensor 195is disposed on or near the image surface 190 of the optical imaging lensassembly.

Among the first lens element 110 through the seventh lens element 170,three lens elements (the first lens element 110, the fourth lens element140 and the fifth lens element 150) have positive refractive power. Whenan Abbe number of each of these three lens elements having positiverefractive power is Vp, the following condition is satisfied for two(the fourth lens element 140 and the fifth lens element 150) of thesethree lens elements: Vp<25.0.

In this embodiment, the number of inflection point on a surface isdetermined by the change of the sign of curvature radius from theparaxial region to the peripheral region.

When a minimum value among all maximum effective radii of theobject-side surfaces (111, 121, 131, 141, 151, 161, 171) and theimage-side surfaces (112, 122, 132, 142, 152, 162, 172) of the sevenlens elements is Ymin, a maximum effective radius of the object-sidesurface 141 of the fourth lens element 140 is equal to Ymin.

The equation of the aspheric surface profiles of the aforementioned lenselements of the 1st embodiment is expressed as follows:

${{X(Y)} = {{\left( {Y^{2}/R} \right)/\left( {1 + {{sqrt}\left( {1 - {\left( {1 + k} \right) \times \left( {Y/R} \right)^{2}}} \right)}} \right)} + {\sum\limits_{i}{({Ai}) \times \left( Y^{i} \right)}}}},$

where,

-   -   X is the relative distance between a point on the aspheric        surface spaced at a distance Y from an optical axis and the        tangential plane at the aspheric surface vertex on the optical        axis;    -   Y is the vertical distance from the point on the aspheric        surface to the optical axis;    -   R is the curvature radius;    -   k is the conic coefficient; and    -   Ai is the i-th aspheric coefficient, and in the embodiments, i        may be, but is not limited to, 4, 6, 8, 10, 12, 14 and 16.

In the optical imaging lens assembly of the image capturing unitaccording to the 1st embodiment, when a focal length of the opticalimaging lens assembly is f, an f-number of the optical imaging lensassembly is Fno, and half of a maximum field of view of the opticalimaging lens assembly is HFOV, these parameters have the followingvalues: f=5.70 millimeters (mm), Fno=1.835, HFOV=21.5 degrees (deg.).

When an Abbe number of the seventh lens element 170 is V7, the followingcondition is satisfied: V7=19.5.

When an Abbe number of the first lens element 110 is V1, an Abbe numberof the second lens element 120 is V2, an Abbe number of the third lenselement 130 is V3, an Abbe number of the fourth lens element 140 is V4,an Abbe number of the fifth lens element 150 is V5, an Abbe number ofthe sixth lens element 160 is V6, the Abbe number of the seventh lenselement 170 is V7, and an Abbe number of the i-th lens element is Vi,the following condition is satisfied: ΣVi=238.9, wherein i=1˜7.

When a curvature radius of the object-side surface 111 of the first lenselement 110 is R1, and a central thickness of the first lens element 110is CT1, the following condition is satisfied: R1/CT1=1.50.

When the central thickness of the first lens element 110 is CT1, and acentral thickness of the seventh lens element 170 is CT7, the followingcondition is satisfied: CT1/CT7=4.40.

When an axial distance between the sixth lens element 160 and theseventh lens element 170 is T67, and a central thickness of the sixthlens element 160 is CT6, the following condition is satisfied:T67/CT6=1.06. In this embodiment, an axial distance between two adjacentlens elements is an air gap in a paraxial region between the twoadjacent lens elements.

When an axial distance between the second lens element 120 and the thirdlens element 130 is T23, and an axial distance between the third lenselement 130 and the fourth lens element 140 is T34, the followingcondition is satisfied: T23/T34=0.56.

When the focal length of the optical imaging lens assembly is f, and thecurvature radius of the object-side surface 111 of the first lenselement 110 is R1, the following condition is satisfied: f/R1=3.29.

When the focal length of the optical imaging lens assembly is f, and acurvature radius of the image-side surface 162 of the sixth lens element160 is R12, the following condition is satisfied: f/R12=2.93.

When the focal length of the optical imaging lens assembly is f, and acurvature radius of the image-side surface 172 of the seventh lenselement 170 is R14, the following condition is satisfied: |f/R14|=0.19.

When a curvature radius of the object-side surface 171 of the seventhlens element 170 is R13, and the curvature radius of the image-sidesurface 172 of the seventh lens element 170 is R14, the followingcondition is satisfied: (R13−R14)/(R13+R14)=0.29.

When the focal length of the optical imaging lens assembly is f, and afocal length of the second lens element 120 is f2, the followingcondition is satisfied: f/f2=−1.26.

When the focal length of the optical imaging lens assembly is f, and afocal length of the seventh lens element 170 is f7, the followingcondition is satisfied: f/f7=−0.06.

When an axial distance between the aperture stop 100 and the image-sidesurface 172 of the seventh lens element 170 is SD, and an axial distancebetween the object-side surface 111 of the first lens element 110 andthe image-side surface 172 of the seventh lens element 170 is TD, thefollowing condition is satisfied: SD/TD=0.78.

When an axial distance between the object-side surface 111 of the firstlens element 110 and the image surface 190 is TL, and the focal lengthof the optical imaging lens assembly is f, the following condition issatisfied: TL/f=1.00.

When the axial distance between the object-side surface 111 of the firstlens element 110 and the image surface 190 is TL, and a maximum imageheight of the optical imaging lens assembly is ImgH, the followingcondition is satisfied: TL/ImgH=2.48.

When the focal length of the optical imaging lens assembly is f, and themaximum image height of the optical imaging lens assembly is ImgH, thefollowing condition is satisfied: f/ImgH=2.48.

When the focal length of the optical imaging lens assembly is f, and anentrance pupil diameter of the optical imaging lens assembly is EPD, thefollowing condition is satisfied: f/EPD=1.84.

When the axial distance between the object-side surface 111 of the firstlens element 110 and the image surface 190 is TL, and the entrance pupildiameter of the optical imaging lens assembly is EPD, the followingcondition is satisfied: TL/EPD=1.84.

When an axial distance between the image-side surface 172 of the seventhlens element 170 and the image surface 190 is BL, and the axial distancebetween the object-side surface 111 of the first lens element 110 andthe image-side surface 172 of the seventh lens element 170 is TD, thefollowing condition is satisfied: BL/TD=0.09.

When half of the maximum field of view of the optical imaging lensassembly is HFOV, the following condition is satisfied: tan(HFOV)=0.39.

When a vertical distance between the critical point on the image-sidesurface 162 of the sixth lens element 160 and an optical axis is Yc62,and the central thickness of the sixth lens element is CT6, thefollowing condition is satisfied: Yc62/CT6=2.90.

When the curvature radius of the object-side surface 111 of the firstlens element 110 is R1, the focal length of the optical imaging lensassembly is f, and the central thickness of the first lens element 110is CT1, the following condition is satisfied: (R1× R1)/(f×CT1)=0.46.

When an axial distance between the fifth lens element 150 and the sixthlens element 160 is T56, and a sum of axial distances between everyadjacent lens elements of the optical imaging lens assembly is EAT, thefollowing condition is satisfied: T56/(EAT-T56)=0.87.

When the axial distance between the object-side surface 111 of the firstlens element 110 and the image surface 190 is TL, the entrance pupildiameter of the optical imaging lens assembly is EPD, and the axialdistance between the fifth lens element 150 and the sixth lens element160 is T56, the following condition is satisfied: TL/(EPD+T56)=1.34.

When the entrance pupil diameter of the optical imaging lens assembly isEPD, a sum of central thicknesses of the seven lens elements of theoptical imaging lens assembly is ECT, and the central thickness of thefirst lens element 110 is CT1, the following condition is satisfied:EPD/(ECT−CT1)=1.98.

When the focal length of the optical imaging lens assembly is f, theaxial distance between the object-side surface 111 of the first lenselement 110 and the image surface 190 is TL, the entrance pupil diameterof the optical imaging lens assembly is EPD, and the maximum imageheight of the optical imaging lens assembly is ImgH, the followingcondition is satisfied: (f×TL)/(EPD×ImgH)=4.55.

The detailed optical data of the 1st embodiment are shown in Table 1 andthe aspheric surface data are shown in Table 2 below.

TABLE 1 1st Embodiment f = 5.70 mm, Fno = 1.835, HFOV = 21.5 deg.Surface # Curvature Radius Thickness Material Index Abbe # Focal Length0 Object Plano Infinity 1 Lens 1 1.733 (ASP) 1.153 Glass 1.518 63.5 2.832 −7.302 (ASP) −0.020  3 Ape. Stop Plano 0.197 4 Lens 2 −197.547 (ASP)0.160 Plastic 1.614 26.0 −4.54 5 2.826 (ASP) 0.231 6 Lens 3 20.126 (ASP)0.288 Plastic 1.582 30.2 −10.85 7 4.785 (ASP) 0.413 8 Lens 4 29.824(ASP) 0.176 Plastic 1.639 23.5 11.72 9 −9.968 (ASP) 0.094 10 Lens 5−13.723 (ASP) 0.288 Plastic 1.669 19.5 1230.20 11 −13.611 (ASP) 1.164 12Lens 6 4.187 (ASP) 0.393 Plastic 1.511 56.8 −7.58 13 1.948 (ASP) 0.41714 Lens 7 55.427 (ASP) 0.262 Plastic 1.669 19.5 −101.74 15 30.488 (ASP)0.200 16 Filter Plano 0.110 Glass 1.517 64.2 — 17 Plano 0.175 18 ImagePlano — Note: Reference wavelength is 587.6 nm (d-line).

TABLE 2 Aspheric Coefficients Surface # 1 2 4 5 6 k = −2.0067E−01−5.2549E+01  9.0000E+01 −1.3439E+01  1.8873E+01 A4 =  2.3233E−048.1680E−03 −1.3503E−01  −1.1323E−01 −3.3296E−02 A6 =  5.0086E−032.8129E−02 3.6875E−01  3.8769E−01  1.2358E−01 A8 = −4.1625E−03−3.3184E−02  −4.1651E−01  −3.3553E−01 −1.3178E−02 A10 =  2.1020E−031.8484E−02 2.5821E−01  1.6615E−01 −3.5493E−02 A12 = −3.6601E−04−5.3397E−03  −8.5111E−02  −2.8846E−02  2.1023E−02 A14 = — 6.3788E−041.1714E−02 — −4.8266E−04 Surface # 7 8 9 10 11 k = 1.0905E+01 5.6384E+01 3.5835E+01  8.5541E+01 8.2762E+01 A4 = −2.6052E−02 −2.6407E−02 3.4657E−02 −6.4355E−02 −9.4093E−02  A6 = 1.7850E−02−2.9253E−01 −1.4973E−01   1.5954E−01 1.1973E−01 A8 = 4.1158E−02 5.3257E−01 3.4754E−01 −8.5986E−02 −1.1958E−01  A10 = −7.5970E−02 −7.1102E−01 −4.5758E−01  −9.6937E−04 9.6010E−02 A12 = 3.0554E−02 4.8059E−01 2.8952E−01  1.5100E−02 −4.3168E−02  A14 = −3.0262E−03 −1.3167E−01 −6.6796E−02  −3.5101E−03 7.9527E−03 A16 = —  7.2896E−04 — —— Surface # 12 13 14 15 k = −1.5373E+01 −1.7678E+00  6.2828E+01 7.1944E+01 A4 = −1.6215E−01 −1.8806E−01 −1.2417E−01 −1.7386E−01 A6 = 5.9000E−02  9.7173E−02  1.2985E−01  1.6540E−01 A8 = −6.4040E−03−4.2071E−02 −8.5032E−02 −9.6582E−02 A10 = −2.5408E−03  1.3288E−02 3.2840E−02  3.3416E−02 A12 =  9.5108E−04 −2.8999E−03 −7.0764E−03−6.4525E−03 A14 = −6.7622E−05  3.8511E−04  7.9669E−04  6.4589E−04 A16 =−4.3416E−06 −2.2339E−05 −3.6782E−05 −2.6172E−05

In Table 1, the curvature radius, the thickness and the focal length areshown in millimeters (mm). Surface numbers 0-18 represent the surfacessequentially arranged from the object side to the image side along theoptical axis. In Table 2, k represents the conic coefficient of theequation of the aspheric surface profiles. A4-A16 represent the asphericcoefficients ranging from the 4th order to the 16th order. The tablespresented below for each embodiment are the corresponding schematicparameter and aberration curves, and the definitions of the tables arethe same as Table 1 and Table 2 of the 1st embodiment. Therefore, anexplanation in this regard will not be provided again.

FIG. 3 is a schematic view of an image capturing unit according to the2nd embodiment of the present disclosure. FIG. 4 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 2ndembodiment. In FIG. 3 , the image capturing unit includes the opticalimaging lens assembly (its reference numeral is omitted) of the presentdisclosure and an image sensor 295. The optical imaging lens assemblyincludes, in order from an object side to an image side, a first lenselement 210, an aperture stop 200, a second lens element 220, a thirdlens element 230, a fourth lens element 240, a fifth lens element 250, asixth lens element 260, a seventh lens element 270, a filter 280 and animage surface 290. The optical imaging lens assembly includes seven lenselements (210, 220, 230, 240, 250, 260 and 270) with no additional lenselement disposed between each of the adjacent seven lens elements.

The first lens element 210 with positive refractive power has anobject-side surface 211 being convex in a paraxial region thereof and animage-side surface 212 being convex in a paraxial region thereof. Thefirst lens element 210 is made of plastic material and has theobject-side surface 211 and the image-side surface 212 being bothaspheric. The image-side surface 212 of the first lens element 210 hasone inflection point.

The second lens element 220 with negative refractive power has anobject-side surface 221 being convex in a paraxial region thereof and animage-side surface 222 being concave in a paraxial region thereof. Thesecond lens element 220 is made of plastic material and has theobject-side surface 221 and the image-side surface 222 being bothaspheric.

The third lens element 230 with negative refractive power has anobject-side surface 231 being convex in a paraxial region thereof and animage-side surface 232 being concave in a paraxial region thereof. Thethird lens element 230 is made of plastic material and has theobject-side surface 231 and the image-side surface 232 being bothaspheric. The image-side surface 232 of the third lens element 230 hasone inflection point.

The fourth lens element 240 with negative refractive power has anobject-side surface 241 being convex in a paraxial region thereof and animage-side surface 242 being concave in a paraxial region thereof. Thefourth lens element 240 is made of plastic material and has theobject-side surface 241 and the image-side surface 242 being bothaspheric. The object-side surface 241 of the fourth lens element 240 hasone inflection point. The image-side surface 242 of the fourth lenselement 240 has two inflection points.

The fifth lens element 250 with positive refractive power has anobject-side surface 251 being convex in a paraxial region thereof and animage-side surface 252 being concave in a paraxial region thereof. Thefifth lens element 250 is made of plastic material and has theobject-side surface 251 and the image-side surface 252 being bothaspheric. Each of the object-side surface 251 and the image-side surface252 of the fifth lens element 250 has three inflection points.

The sixth lens element 260 with negative refractive power has anobject-side surface 261 being convex in a paraxial region thereof and animage-side surface 262 being concave in a paraxial region thereof. Thesixth lens element 260 is made of plastic material and has theobject-side surface 261 and the image-side surface 262 being bothaspheric. The object-side surface 261 of the sixth lens element 260 hasthree inflection points. The image-side surface 262 of the sixth lenselement 260 has one inflection point. The image-side surface 262 of thesixth lens element 260 has at least one critical point.

The seventh lens element 270 with negative refractive power has anobject-side surface 271 being concave in a paraxial region thereof andan image-side surface 272 being convex in a paraxial region thereof. Theseventh lens element 270 is made of plastic material and has theobject-side surface 271 and the image-side surface 272 being bothaspheric. Each of the object-side surface 271 and the image-side surface272 of the seventh lens element 270 has one inflection point.

The filter 280 is made of glass material and located between the seventhlens element 270 and the image surface 290, and will not affect thefocal length of the optical imaging lens assembly. The image sensor 295is disposed on or near the image surface 290 of the optical imaging lensassembly.

Among the first lens element 210 through the seventh lens element 270,two lens elements (the first lens element 210 and the fifth lens element250) have positive refractive power. When an Abbe number of each ofthese two lens elements having positive refractive power is Vp, thefollowing condition is satisfied for one (the fifth lens element 250) ofthese two lens elements: Vp<25.0.

When a minimum value among all maximum effective radii of theobject-side surfaces and the image-side surfaces of the seven lenselements is Ymin, a maximum effective radius of the object-side surface241 of the fourth lens element 240 is equal to Ymin.

The detailed optical data of the 2nd embodiment are shown in Table 3 andthe aspheric surface data are shown in Table 4 below.

TABLE 3 2nd Embodiment f = 5.40 mm, Fno = 1.75, HFOV = 22.6 deg. Sur-face Curvature Thick- Mat- Abbe Focal # Radius ness erial Index # Length 0 Object Plano Infinity  1 Lens 1   1.637 (ASP)  1.201 Plastic 1.54556.1 2.67  2  −9.552 (ASP) −0.016  3 Ape. Plano  0.155 Stop  4 Lens 2 10.489 (ASP)  0.160 Plastic 1.660 20.4 −5.09  5   2.529 (ASP)  0.267  6Lens 3  11.827 (ASP)  0.262 Plastic 1.614 26.0 −8.34  7   3.543 (ASP) 0.350  8 Lens 4   7.763 (ASP)  0.160 Plastic 1.639 23.5 −14.98  9  4.251 (ASP)  0.035 10 Lens 5   4.289 (ASP)  0.225 Plastic 1.688 18.78.00 11  19.013 (ASP)  0.676 12 Lens 6   1.749 (ASP)  0.211 Plastic1.544 55.9 −10.42 13   1.279 (ASP)  0.484 14 Lens 7  −5.043 (ASP)  0.561Plastic 1.688 18.7 −10.39 15 −17.903 (ASP)  0.200 16 Filter Plano  0.110Glass 1.517 64.2 — 17 Plano  0.103 18 Image Plano — Note: Referencewavelength is 587.6 nm (d-line).

TABLE 4 Aspheric Coefficients Surface # 1 2 4 5 6 k = −2.2766E−01−5.4856E+01  −7.9199E+01 −9.1163E+00 −4.8382E+00 A4 =  1.4912E−031.0413E−02 −1.3559E−01 −1.0343E−01 −3.8612E−02 A6 =  3.5588E−032.8248E−02  3.7303E−01  3.9738E−01  1.2885E−01 A8 = −3.6777E−03−3.4511E−02  −4.1241E−01 −3.2838E−01 −2.3027E−02 A10 =  2.3606E−031.8313E−02  2.5615E−01  1.6326E−01 −3.4149E−02 A12 = −5.2752E−04−4.9013E−03  −8.6127E−02 −1.1769E−02  3.8434E−02 A14 = — 5.4000E−04 1.2196E−02 — −8.1045E−03 Surface # 7 8 9 10 11 k = 6.0228E+00−3.8499E+00 −8.2589E+01 −4.2683E+01 8.6098E+01 A4 = −2.9950E−02  6.3122E−02 −5.3406E−03 −2.7318E−01 −2.0472E−01  A6 = 6.6405E−03−4.7927E−01  2.4855E−01  6.4502E−01 2.6392E−01 A8 = 3.5932E−02 6.8554E−01 −1.3484E+00 −5.9889E−01 1.1220E−02 A10 = −7.6446E−02 −1.5794E+00  2.4269E+00  3.1603E−01 −1.2414E−01  A12 = 2.6630E−02 2.5526E+00 −2.3204E+00 −9.4956E−02 5.6797E−02 A14 = −1.3644E−02 −2.1100E+00  1.1864E+00  1.1653E−02 −8.2630E−03  A16 = —  6.5852E−01−2.4730E−01 — — Surface # 12 13 14 15 k = −1.2330E+01 −3.1109E+00−4.7733E+01  6.6043E+01 A4 = −1.8032E−01 −2.9604E−01 −1.7719E−01−3.3778E−01 A6 = −3.0002E−01  1.2531E−01  3.4155E−01  3.8233E−01 A8 = 5.2843E−01 −5.1007E−03 −3.1854E−01 −2.2757E−01 A10 = −3.7546E−01−3.4137E−02  1.5489E−01  7.2672E−02 A12 =  1.3646E−01  2.0267E−02−4.1309E−02 −1.2015E−02 A14 = −2.3250E−02 −5.0364E−03  5.7450E−03 8.3175E−04 A16 =  1.3091E−03  4.7582E−04 −3.2467E−04 −4.3169E−06

In the 2nd embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 2nd embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 3 and Table 4 asthe following values and satisfy the following conditions:

2nd Embodiment f [mm] 5.40 SD/TD 0.75 Fno 1.75 TL/f 0.95 HFOV [deg.]22.6 TL/ImgH 2.24 V7 18.7 f/ImgH 2.35 ΣVi 219.3 f/EPD 1.75 R1/CT1 1.36TL/EPD 1.67 CT1/CT7 2.14 BL/TD 0.09 T67/CT6 2.29 tan(HFOV) 0.42 T23/T340.76 Yc62/CT6 4.17 f/R1 3.30 (R1 × R1)/(f × CT1) 0.41 f/R12 4.22T56/(ΣAT − T56) 0.53 |f/R14| 0.30 TL/(EPD + T56) 1.37 (R13 − R14)/(R13 +R14) −0.56 EPD/(ΣCT − CT1) 1.95 f/f2 −1.06 (f × TL)/(EPD × ImgH) 3.91f/f7 −0.52 — —

3rd Embodiment

FIG. 5 is a schematic view of an image capturing unit according to the3rd embodiment of the present disclosure. FIG. 6 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 3rdembodiment. In FIG. 5 , the image capturing unit includes the opticalimaging lens assembly (its reference numeral is omitted) of the presentdisclosure and an image sensor 395. The optical imaging lens assemblyincludes, in order from an object side to an image side, a first lenselement 310, an aperture stop 300, a second lens element 320, a thirdlens element 330, a stop 301, a fourth lens element 340, a fifth lenselement 350, a sixth lens element 360, a seventh lens element 370, afilter 380 and an image surface 390. The optical imaging lens assemblyincludes seven lens elements (310, 320, 330, 340, 350, 360 and 370) withno additional lens element disposed between each of the adjacent sevenlens elements.

The first lens element 310 with positive refractive power has anobject-side surface 311 being convex in a paraxial region thereof and animage-side surface 312 being convex in a paraxial region thereof. Thefirst lens element 310 is made of plastic material and has theobject-side surface 311 and the image-side surface 312 being bothaspheric. The image-side surface 312 of the first lens element 310 hasone inflection point.

The second lens element 320 with negative refractive power has anobject-side surface 321 being convex in a paraxial region thereof and animage-side surface 322 being concave in a paraxial region thereof. Thesecond lens element 320 is made of plastic material and has theobject-side surface 321 and the image-side surface 322 being bothaspheric.

The third lens element 330 with negative refractive power has anobject-side surface 331 being convex in a paraxial region thereof and animage-side surface 332 being concave in a paraxial region thereof. Thethird lens element 330 is made of plastic material and has theobject-side surface 331 and the image-side surface 332 being bothaspheric. The image-side surface 332 of the third lens element 330 hasone inflection point.

The fourth lens element 340 with positive refractive power has anobject-side surface 341 being convex in a paraxial region thereof and animage-side surface 342 being concave in a paraxial region thereof. Thefourth lens element 340 is made of plastic material and has theobject-side surface 341 and the image-side surface 342 being bothaspheric. The object-side surface 341 of the fourth lens element 340 hasone inflection point. The image-side surface 342 of the fourth lenselement 340 has two inflection points.

The fifth lens element 350 with positive refractive power has anobject-side surface 351 being convex in a paraxial region thereof and animage-side surface 352 being convex in a paraxial region thereof. Thefifth lens element 350 is made of plastic material and has theobject-side surface 351 and the image-side surface 352 being bothaspheric. The object-side surface 351 of the fifth lens element 350 hasthree inflection points. The image-side surface 352 of the fifth lenselement 350 has two critical points.

The sixth lens element 360 with negative refractive power has anobject-side surface 361 being convex in a paraxial region thereof and animage-side surface 362 being concave in a paraxial region thereof. Thesixth lens element 360 is made of plastic material and has theobject-side surface 361 and the image-side surface 362 being bothaspheric. Each of the object-side surface 361 and the image-side surface362 of the sixth lens element 360 has two inflection points. Theimage-side surface 362 of the sixth lens element 360 has at least onecritical point.

The seventh lens element 370 with negative refractive power has anobject-side surface 371 being concave in a paraxial region thereof andan image-side surface 372 being concave in a paraxial region thereof.The seventh lens element 370 is made of plastic material and has theobject-side surface 371 and the image-side surface 372 being bothaspheric. The object-side surface 371 of the seventh lens element 370has four inflection points. The image-side surface 372 of the seventhlens element 370 has five inflection points.

The filter 380 is made of glass material and located between the seventhlens element 370 and the image surface 390, and will not affect thefocal length of the optical imaging lens assembly. The image sensor 395is disposed on or near the image surface 390 of the optical imaging lensassembly.

Among the first lens element 310 through the seventh lens element 370,three lens elements (the first lens element 310, the fourth lens element340 and the fifth lens element 350) have positive refractive power. Whenan Abbe number of each of these three lens elements having positiverefractive power is Vp, the following condition is satisfied for two(the fourth lens element 340 and the fifth lens element 350) of thesethree lens elements: Vp<25.0.

The detailed optical data of the 3rd embodiment are shown in Table 5 andthe aspheric surface data are shown in Table 6 below.

TABLE 5 3rd Embodiment f = 5.34 mm, Fno = 1.53, HFOV = 23.5 deg. Surface# Curvature Radius Thickness Material Index Abbe # Focal Length 0 ObjectPlano Infinity 1 Lens 1 1.872 (ASP) 1.453 Plastic 1.545 56.1 3.02 2−9.961 (ASP) −0.027  3 Ape. Stop Plano 0.158 4 Lens 2 6.389 (ASP) 0.160Plastic 1.669 19.5 −6.69 5 2.604 (ASP) 0.198 6 Lens 3 6.284 (ASP) 0.200Plastic 1.639 23.5 −7.42 7 2.668 (ASP) 0.284 8 Stop Plano 0.200 9 Lens 47.530 (ASP) 0.209 Plastic 1.639 23.5 38.87 10 10.691 (ASP) 0.035 11 Lens5 16.175 (ASP) 0.252 Plastic 1.688 18.7 16.09 12 −34.843 (ASP) 0.923 13Lens 6 1.807 (ASP) 0.278 Plastic 1.544 55.9 −10.39 14 1.295 (ASP) 0.37215 Lens 7 −7.514 (ASP) 0.434 Plastic 1.688 18.7 −10.87 16 1506.767 (ASP)0.200 17 Filter Plano 0.110 Glass 1.517 64.2 — 18 Plano 0.096 19 ImagePlano — Note: Reference wavelength is 587.6 nm (d-line). An effectiveradius of the stop 301 (Surface 8) is 1.154 mm.

TABLE 6 Aspheric Coefficients Surface # 1 2 4 5 6 k = −2.6434E−01−2.9352E+01  −7.1644E+01 −1.3231E+01  8.3352E+00 A4 = −8.3976E−041.0369E−02 −1.5505E−01 −1.2761E−01 −3.4192E−02 A6 =  6.1898E−032.8225E−02  3.6473E−01  3.7268E−01  1.1063E−01 A8 = −4.5218E−03−3.5181E−02  −4.1179E−01 −3.4336E−01 −3.9619E−02 A10 =  1.9111E−031.8282E−02  2.5919E−01  1.5933E−01 −3.9490E−02 A12 = −3.1078E−04−4.6417E−03  −8.3809E−02 −1.7819E−02  4.2484E−02 A14 = — 4.6995E−04 1.0942E−02  2.8717E−14 −9.0749E−03 Surface # 7 9 10 11 12 k = 3.5109E+00 −3.8499E+00 −8.2589E+01 5.8511E+01 1.3297E+01 A4 =−3.3863E−02 −4.0445E−02 −1.9388E−01 −2.9042E−01  −1.5745E−01  A6 = 1.1980E−02 −2.4008E−02  5.9439E−01 6.6115E−01 2.6039E−01 A8 = 2.0069E−02 −1.6321E−01 −1.1702E+00 −6.2810E−01  −2.2245E−01  A10 =−6.9988E−02  2.3148E−03  1.3319E+00 3.3132E−01 1.4548E−01 A12 = 4.4332E−02  3.5654E−01 −9.0423E−01 −9.1244E−02  −5.2654E−02  A14 =−1.4022E−02 −3.6057E−01  3.3385E−01 9.7675E−03 7.2073E−03 A16 =−8.9218E−15  1.0703E−01 −5.0021E−02 — — Surface # 13 14 15 16 k =−7.0882E+00 −2.4303E+00 −8.9897E+01  9.0000E+01 A4 = −1.6283E−01−2.2123E−01 −2.1856E−01 −3.8091E−01 A6 = −7.4849E−02  6.2571E−02 3.1089E−01  4.2744E−01 A8 =  1.1836E−01  3.2161E−02 −1.9935E−01−2.4527E−01 A10 = −5.5284E−02 −3.8752E−02  6.8056E−02  8.1844E−02 A12 = 1.2766E−02  1.5006E−02 −1.3281E−02 −1.6498E−02 A14 = −1.4619E−03−2.6780E−03  1.4306E−03  1.8748E−03 A16 =  6.6673E−05  1.8376E−04−6.6487E−05 −9.1390E−05

In the 3rd embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 3rd embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 5 and Table 6 asthe following values and satisfy the following conditions:

3rd Embodiment f [mm] 5.34 SD/TD 0.72 Fno 1.53 TL/f 1.04 HFOV [deg.]23.5 TL/ImgH 2.31 V7 18.7 f/ImgH 2.23 ΣVi 215.8 f/EPD 1.53 R1/CT1 1.29TL/EPD 1.59 CT1/CT7 3.35 BL/TD 0.08 T67/CT6 1.34 tan(HFOV) 0.44 T23/T340.41 Yc62/CT6 3.99 f/R1 2.85 (R1 × R1)/(f × CT1) 0.45 f/R12 4.12T56/(ΣAT − T56) 0.76 |f/R14| 0.0035 TL/(EPD + T56) 1.25 (R13 −R14)/(R13 + R14) −1.01 EPD/(ΣCT − CT1) 2.28 f/f2 −0.80 (f × TL)/(EPD ×ImgH) 3.53 f/f7 −0.49 — —

4th Embodiment

FIG. 7 is a schematic view of an image capturing unit according to the4th embodiment of the present disclosure. FIG. 8 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 4thembodiment. In FIG. 7 , the image capturing unit includes the opticalimaging lens assembly (its reference numeral is omitted) of the presentdisclosure and an image sensor 495. The optical imaging lens assemblyincludes, in order from an object side to an image side, a first lenselement 410, an aperture stop 400, a second lens element 420, a thirdlens element 430, a stop 401, a fourth lens element 440, a fifth lenselement 450, a sixth lens element 460, a seventh lens element 470, afilter 480 and an image surface 490. The optical imaging lens assemblyincludes seven lens elements (410, 420, 430, 440, 450, 460 and 470) withno additional lens element disposed between each of the adjacent sevenlens elements.

The first lens element 410 with positive refractive power has anobject-side surface 411 being convex in a paraxial region thereof and animage-side surface 412 being convex in a paraxial region thereof. Thefirst lens element 410 is made of plastic material and has theobject-side surface 411 and the image-side surface 412 being bothaspheric. The image-side surface 412 of the first lens element 410 hasone inflection point.

The second lens element 420 with negative refractive power has anobject-side surface 421 being convex in a paraxial region thereof and animage-side surface 422 being concave in a paraxial region thereof. Thesecond lens element 420 is made of plastic material and has theobject-side surface 421 and the image-side surface 422 being bothaspheric.

The third lens element 430 with negative refractive power has anobject-side surface 431 being convex in a paraxial region thereof and animage-side surface 432 being concave in a paraxial region thereof. Thethird lens element 430 is made of plastic material and has theobject-side surface 431 and the image-side surface 432 being bothaspheric. The image-side surface 432 of the third lens element 430 hastwo inflection points.

The fourth lens element 440 with positive refractive power has anobject-side surface 441 being convex in a paraxial region thereof and animage-side surface 442 being concave in a paraxial region thereof. Thefourth lens element 440 is made of plastic material and has theobject-side surface 441 and the image-side surface 442 being bothaspheric. The object-side surface 441 of the fourth lens element 440 hasone inflection point. The image-side surface 442 of the fourth lenselement 440 has two inflection points.

The fifth lens element 450 with negative refractive power has anobject-side surface 451 being concave in a paraxial region thereof andan image-side surface 452 being convex in a paraxial region thereof. Thefifth lens element 450 is made of plastic material and has theobject-side surface 451 and the image-side surface 452 being bothaspheric. Each of the object-side surface 451 and the image-side surface452 of the fifth lens element 450 has two inflection points.

The sixth lens element 460 with positive refractive power has anobject-side surface 461 being convex in a paraxial region thereof and animage-side surface 462 being concave in a paraxial region thereof. Thesixth lens element 460 is made of plastic material and has theobject-side surface 461 and the image-side surface 462 being bothaspheric. Each of the object-side surface 461 and the image-side surface462 of the sixth lens element 460 has two inflection points. Theimage-side surface 462 of the sixth lens element 460 has at least onecritical point.

The seventh lens element 470 with negative refractive power has anobject-side surface 471 being concave in a paraxial region thereof andan image-side surface 472 being convex in a paraxial region thereof. Theseventh lens element 470 is made of plastic material and has theobject-side surface 471 and the image-side surface 472 being bothaspheric. Each of the object-side surface 471 and the image-side surface472 of the seventh lens element 470 has three inflection points.

The filter 480 is made of glass material and located between the seventhlens element 470 and the image surface 490, and will not affect thefocal length of the optical imaging lens assembly. The image sensor 495is disposed on or near the image surface 490 of the optical imaging lensassembly.

Among the first lens element 410 through the seventh lens element 470,three lens elements (the first lens element 410, the fourth lens element440 and the sixth lens element 460) have positive refractive power. Whenan Abbe number of each of these three lens elements having positiverefractive power is Vp, the following condition is satisfied for one(the fourth lens element 440) of these three lens elements: Vp<25.0.

When a minimum value among all maximum effective radii of theobject-side surfaces and the image-side surfaces of the seven lenselements is Ymin, a maximum effective radius of the object-side surface441 of the fourth lens element 440 is equal to Ymin.

The detailed optical data of the 4th embodiment are shown in Table 7 andthe aspheric surface data are shown in Table 8 below.

TABLE 7 4th Embodiment f = 5.31 mm, Fno = 1.54, HFOV = 22.7 deg. Surface# Curvature Radius Thickness Material Index Abbe # Focal Length 0 ObjectPlano Infinity 1 Lens 1 1.885 (ASP) 1.425 Plastic 1.545 56.1 3.04 2−9.966 (ASP) −0.001  3 Ape. Stop Plano 0.140 4 Lens 2 5.257 (ASP) 0.160Plastic 1.669 19.5 −7.25 5 2.491 (ASP) 0.165 6 Lens 3 5.354 (ASP) 0.200Plastic 1.639 23.5 −6.80 7 2.362 (ASP) 0.319 8 Stop Plano 0.200 9 Lens 46.688 (ASP) 0.198 Plastic 1.639 23.5 10.93 10 159.250 (ASP) 0.262 11Lens 5 −4.799 (ASP) 0.306 Plastic 1.688 18.7 −42.85 12 −5.880 (ASP)0.469 13 Lens 6 1.268 (ASP) 0.255 Plastic 1.544 55.9 366.05 14 1.185(ASP) 0.668 15 Lens 7 −3.119 (ASP) 0.376 Plastic 1.688 18.7 −6.04 16−13.126 (ASP) 0.200 17 Filter Plano 0.110 Glass 1.517 64.2 — 18 Plano0.089 19 Image Plano — Note: Reference wavelength is 587.6 nm (d-line).An effective radius of the stop 401 (Surface 8) is 1.172 mm.

TABLE 8 Aspheric Coefficients Surface # 1 2 4 5 6 k = −2.7037E−01−2.5456E+01  −4.7271E+01 −1.3116E+01  5.4184E+00 A4 = −8.9773E−041.1002E−02 −1.5709E−01 −1.2757E−01 −3.6413E−02 A6 =  6.2665E−032.8702E−02  3.6427E−01  3.7148E−01  1.0853E−01 A8 = −4.4601E−03−3.5310E−02  −4.1191E−01 −3.4646E−01 −4.3960E−02 A10 =  1.8334E−031.8249E−02  2.5890E−01  1.5740E−01 −3.9287E−02 A12 = −2.8697E−04−4.6269E−03  −8.3576E−02 −1.7697E−02  4.4103E−02 A14 = — 4.6848E−04 1.0906E−02 −9.3080E−13 −9.2285E−03 Surface # 7 9 10 11 12 k = 2.4405E+00 −3.8499E+00 −8.2589E+01 −8.6319E+01 −2.8949E+01 A4 =−3.9258E−02 −5.0876E−02  1.8959E−02 −7.0775E−02 −1.1782E−01 A6 = 3.6726E−03 −8.8648E−02 −1.7660E−01  9.8032E−02  1.3303E−01 A8 = 2.0738E−02 −3.3123E−02  2.3047E−01 −9.7617E−03 −6.5109E−02 A10 =−6.7934E−02  1.2485E−01 −2.5580E−01 −1.9570E−02  2.8634E−02 A12 = 4.4451E−02 −1.7624E−01  1.9704E−01  9.2678E−03 −8.4372E−03 A14 =−1.2369E−02  1.3982E−01 −7.1000E−02 −1.4556E−03  9.2733E−04 A16 =−1.6372E−13 −4.3086E−02  8.7651E−03 — — Surface # 13 14 15 16 k =−4.2102E+00 −1.9131E+00 −2.6209E+01 −9.0000E+01 A4 = −1.5023E−01−2.1442E−01 −3.1051E−01 −4.3867E−01 A6 = −6.5734E−02  3.7498E−02 4.5068E−01  5.0865E−01 A8 =  6.5631E−02  4.4258E−02 −2.9970E−01−3.0493E−01 A10 = −1.0596E−02 −4.5170E−02  1.0824E−01  1.0767E−01 A12 =−2.9259E−03  1.8717E−02 −2.2382E−02 −2.2984E−02 A14 =  1.0321E−03−3.7110E−03  2.5331E−03  2.7581E−03 A16 = −8.0299E−05  2.8500E−04−1.2247E−04 −1.4171E−04

In the 4th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 4th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 7 and Table 8 asthe following values and satisfy the following conditions:

4th Embodiment f [mm] 5.31 SD/TD 0.72 Fno 1.54 TL/f 1.04 HFOV [deg.]22.7 TL/ImgH 2.41 V7 18.7 f/ImgH 2.31 ΣVi 215.8 f/EPD 1.54 R1/CT1 1.32TL/EPD 1.61 CT1/CT7 3.79 BL/TD 0.08 T67/CT6 2.62 tan(HFOV) 0.42 T23/T340.32 Yc62/CT6 4.39 f/R1 2.81 (R1 × R1)/(f × CT1) 0.47 f/R12 4.48T56/(ΣAT − T56) 0.27 |f/R14| 0.40 TL/(EPD + T56) 1.42 (R13 − R14)/(R13 +R14) −0.62 EPD/(ΣCT − CT1) 2.30 f/f2 −0.73 (f × TL)/(EPD × ImgH) 3.72f/f7 −0.88 — —

5th Embodiment

FIG. 9 is a schematic view of an image capturing unit according to the5th embodiment of the present disclosure. FIG. 10 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 5thembodiment. In FIG. 9 , the image capturing unit includes the opticalimaging lens assembly (its reference numeral is omitted) of the presentdisclosure and an image sensor 595. The optical imaging lens assemblyincludes, in order from an object side to an image side, a first lenselement 510, an aperture stop 500, a second lens element 520, a thirdlens element 530, a fourth lens element 540, a fifth lens element 550, asixth lens element 560, a seventh lens element 570, a filter 580 and animage surface 590.

The optical imaging lens assembly includes seven lens elements (510,520, 530, 540, 550, 560 and 570) with no additional lens elementdisposed between each of the adjacent seven lens elements.

The first lens element 510 with positive refractive power has anobject-side surface 511 being convex in a paraxial region thereof and animage-side surface 512 being concave in a paraxial region thereof. Thefirst lens element 510 is made of plastic material and has theobject-side surface 511 and the image-side surface 512 being bothaspheric.

The second lens element 520 with negative refractive power has anobject-side surface 521 being convex in a paraxial region thereof and animage-side surface 522 being concave in a paraxial region thereof. Thesecond lens element 520 is made of plastic material and has theobject-side surface 521 and the image-side surface 522 being bothaspheric.

The third lens element 530 with negative refractive power has anobject-side surface 531 being convex in a paraxial region thereof and animage-side surface 532 being concave in a paraxial region thereof. Thethird lens element 530 is made of plastic material and has theobject-side surface 531 and the image-side surface 532 being bothaspheric. The image-side surface 532 of the third lens element 530 hasone inflection point.

The fourth lens element 540 with positive refractive power has anobject-side surface 541 being convex in a paraxial region thereof and animage-side surface 542 being concave in a paraxial region thereof. Thefourth lens element 540 is made of plastic material and has theobject-side surface 541 and the image-side surface 542 being bothaspheric. The object-side surface 541 of the fourth lens element 540 hasone inflection point. The image-side surface 542 of the fourth lenselement 540 has three inflection points.

The fifth lens element 550 with positive refractive power has anobject-side surface 551 being concave in a paraxial region thereof andan image-side surface 552 being convex in a paraxial region thereof. Thefifth lens element 550 is made of plastic material and has theobject-side surface 551 and the image-side surface 552 being bothaspheric. Each of the object-side surface 551 and the image-side surface552 of the fifth lens element 550 has two inflection points.

The sixth lens element 560 with negative refractive power has anobject-side surface 561 being convex in a paraxial region thereof and animage-side surface 562 being concave in a paraxial region thereof. Thesixth lens element 560 is made of plastic material and has theobject-side surface 561 and the image-side surface 562 being bothaspheric. Each of the object-side surface 561 and the image-side surface562 of the sixth lens element 560 has three inflection points. Theimage-side surface 562 of the sixth lens element 560 has at least onecritical point.

The seventh lens element 570 with negative refractive power has anobject-side surface 571 being concave in a paraxial region thereof andan image-side surface 572 being concave in a paraxial region thereof.The seventh lens element 570 is made of plastic material and has theobject-side surface 571 and the image-side surface 572 being bothaspheric. The object-side surface 571 of the seventh lens element 570has three inflection points. The image-side surface 572 of the seventhlens element 570 has four inflection points.

The filter 580 is made of glass material and located between the seventhlens element 570 and the image surface 590, and will not affect thefocal length of the optical imaging lens assembly. The image sensor 595is disposed on or near the image surface 590 of the optical imaging lensassembly.

Among the first lens element 510 through the seventh lens element 570,three lens elements (the first lens element 510, the fourth lens element540 and the fifth lens element 550) have positive refractive power. Whenan Abbe number of each of these three lens elements having positiverefractive power is Vp, the following condition is satisfied for two(the fourth lens element 540 and the fifth lens element 550) of thesethree lens elements: Vp<25.0.

When a minimum value among all maximum effective radii of theobject-side surfaces and the image-side surfaces of the seven lenselements is Ymin, a maximum effective radius of the object-side surface541 of the fourth lens element 440 is equal to Ymin.

The detailed optical data of the 5th embodiment are shown in Table 9 andthe aspheric surface data are shown in Table 10 below.

TABLE 9 5th Embodiment f = 5.16 mm, Fno = 1.55, HFOV = 22.6 deg. Surface# Curvature Radius Thickness Material Index Abbe # Focal Length 0 ObjectPlano Infinity 1 Lens 1 1.802 (ASP) 1.150 Plastic 1.545 56.1 3.37 274.008 (ASP) 0.169 3 Ape. Stop Plano 0.016 4 Lens 2 5.170 (ASP) 0.171Plastic 1.669 19.5 −6.45 5 2.321 (ASP) 0.239 6 Lens 3 4.039 (ASP) 0.283Plastic 1.639 23.5 −17.98 7 2.906 (ASP) 0.487 8 Lens 4 5.736 (ASP) 0.170Plastic 1.650 21.5 20.11 9 10.098 (ASP) 0.225 10 Lens 5 −32.405 (ASP)0.477 Plastic 1.672 18.8 26.66 11 −11.605 (ASP) 0.559 12 Lens 6 1.468(ASP) 0.210 Plastic 1.544 55.9 −25.62 13 1.261 (ASP) 0.759 14 Lens 7−4.156 (ASP) 0.224 Plastic 1.688 18.7 −5.11 15 23.323 (ASP) 0.200 16Filter Plano 0.110 Glass 1.517 64.2 — 17 Plano 0.096 18 Image Plano —Note: Reference wavelength is 587.6 nm (d-line).

TABLE 10 Aspheric Coefficients Surface # 1 2 4 5 6 k = −2.2330E−019.0000E+01 −1.2050E+01 −6.2067E+00 −3.0770E+00 A4 = −1.3189E−033.3393E−03 −1.5486E−01 −1.2599E−01 −5.0804E−02 A6 =  8.1261E−032.9399E−02  3.6134E−01  3.7204E−01  1.0663E−01 A8 = −4.6979E−03−3.5530E−02  −4.1314E−01 −3.4260E−01 −4.3040E−02 A10 =  1.6757E−031.8264E−02  2.5943E−01  1.5716E−01 −3.7915E−02 A12 = −2.3387E−04−4.4644E−03  −8.3130E−02 −1.8838E−02  4.4183E−02 A14 = — 4.2774E−04 1.0667E−02 −3.4426E−11 −1.0429E−02 Surface # 7 8 9 10 11 k = 2.2536E+00 −2.0644E+01 −8.2589E+01  6.4809E+01 2.9767E+01 A4 =−3.4732E−02 −1.5598E−01 −1.0881E−01 −9.1990E−02 −1.1298E−01  A6 =−1.3205E−03  4.2419E−01  1.9323E−01  1.4797E−01 1.3834E−01 A8 = 1.9021E−02 −1.3581E+00 −3.7535E−01 −5.4784E−02 −8.5450E−02  A10 =−6.5942E−02  2.1403E+00  3.8400E−01 −2.0530E−03 3.6216E−02 A12 = 4.7626E−02 −2.0129E+00 −2.1175E−01  5.7973E−03 −8.1674E−03  A14 =−1.2843E−02  1.0438E+00  6.6851E−02 −1.0455E−03 6.6188E−04 A16 =−2.5380E−12 −2.2926E−01 −1.0019E−02 — — Surface # 12 13 14 15 k =−6.2542E+00 −2.2861E+00 −4.7019E+01  6.6425E+01 A4 = −2.0578E−01−2.9949E−01 −3.4828E−01 −4.8078E−01 A6 =  2.7083E−02  2.0063E−01 5.3646E−01  6.0017E−01 A8 =  3.0995E−02 −1.0770E−01 −3.7176E−01−3.6283E−01 A10 = −1.4586E−02  3.8473E−02  1.4006E−01  1.2333E−01 A12 = 9.0016E−04 −8.4194E−03 −2.9859E−02 −2.4119E−02 A14 =  7.3096E−04 9.7877E−04  3.3992E−03  2.5429E−03 A16 = −1.2664E−04 −4.2359E−05−1.6066E−04 −1.1203E−04

In the 5th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 5th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 9 and Table 10as the following values and satisfy the following conditions:

5th Embodiment f [mm] 5.16 SD/TD 0.74 Fno 1.55 TL/f 1.07 HFOV [deg.]22.6 TL/ImgH 2.41 V7 18.7 f/ImgH 2.24 ΣVi 213.9 f/EPD 1.55 R1/CT1 1.57TL/EPD 1.67 CT1/CT7 5.13 BL/TD 0.08 T67/CT6 3.61 tan(HFOV) 0.42 T23/T340.49 Yc62/CT6 4.95 f/R1 2.86 (R1 × R1)/(f × CT1) 0.55 f/R12 4.09T56/(ΣAT − T56) 0.29 |f/R14| 0.22 TL/(EPD + T56) 1.43 (R13 − R14)/(R13 +R14) −1.43 EPD/(ΣCT − CT1) 2.17 f/f2 −0.80 (f × TL)/(EPD × ImgH) 3.74f/f7 −1.01 — —

6th Embodiment

FIG. 11 is a schematic view of an image capturing unit according to the6th embodiment of the present disclosure. FIG. 12 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 6thembodiment. In FIG. 11 , the image capturing unit includes the opticalimaging lens assembly (its reference numeral is omitted) of the presentdisclosure and an image sensor 695. The optical imaging lens assemblyincludes, in order from an object side to an image side, an aperturestop 600, a first lens element 610, a second lens element 620, a thirdlens element 630, a fourth lens element 640, a fifth lens element 650, asixth lens element 660, a seventh lens element 670, a filter 680 and animage surface 690. The optical imaging lens assembly includes seven lenselements (610, 620, 630, 640, 650, 660 and 670) with no additional lenselement disposed between each of the adjacent seven lens elements.

The first lens element 610 with positive refractive power has anobject-side surface 611 being convex in a paraxial region thereof and animage-side surface 612 being concave in a paraxial region thereof. Thefirst lens element 610 is made of plastic material and has theobject-side surface 611 and the image-side surface 612 being bothaspheric. The image-side surface 612 of the first lens element 610 hastwo inflection points.

The second lens element 620 with positive refractive power has anobject-side surface 621 being convex in a paraxial region thereof and animage-side surface 622 being convex in a paraxial region thereof. Thesecond lens element 620 is made of glass material and has theobject-side surface 621 and the image-side surface 622 being bothaspheric. The object-side surface 621 of the second lens element 620 hasone inflection point.

The third lens element 630 with negative refractive power has anobject-side surface 631 being concave in a paraxial region thereof andan image-side surface 632 being concave in a paraxial region thereof.The third lens element 630 is made of glass material and has theobject-side surface 631 and the image-side surface 632 being bothaspheric. The object-side surface 631 of the third lens element 630 hastwo inflection points.

The fourth lens element 640 with negative refractive power has anobject-side surface 641 being convex in a paraxial region thereof and animage-side surface 642 being concave in a paraxial region thereof. Thefourth lens element 640 is made of plastic material and has theobject-side surface 641 and the image-side surface 642 being bothaspheric. The object-side surface 641 of the fourth lens element 640 hastwo inflection points.

The fifth lens element 650 with positive refractive power has anobject-side surface 651 being convex in a paraxial region thereof and animage-side surface 652 being concave in a paraxial region thereof. Thefifth lens element 650 is made of plastic material and has theobject-side surface 651 and the image-side surface 652 being bothaspheric. The image-side surface 652 of the fifth lens element 650 hasone inflection point.

The sixth lens element 660 with positive refractive power has anobject-side surface 661 being convex in a paraxial region thereof and animage-side surface 662 being concave in a paraxial region thereof. Thesixth lens element 660 is made of glass material and has the object-sidesurface 661 and the image-side surface 662 being both aspheric. Each ofthe object-side surface 661 and the image-side surface 662 of the sixthlens element 660 has two inflection points. The image-side surface 662of the sixth lens element 660 has at least one critical point.

The seventh lens element 670 with negative refractive power has anobject-side surface 671 being concave in a paraxial region thereof andan image-side surface 672 being convex in a paraxial region thereof. Theseventh lens element 670 is made of plastic material and has theobject-side surface 671 and the image-side surface 672 being bothaspheric. The object-side surface 671 of the seventh lens element 670has one inflection point.

The filter 680 is made of glass material and located between the seventhlens element 670 and the image surface 690, and will not affect thefocal length of the optical imaging lens assembly. The image sensor 695is disposed on or near the image surface 690 of the optical imaging lensassembly.

Among the first lens element 610 through the seventh lens element 670,four lens elements (the first lens element 610, the second lens element620, the fifth lens element 650 and the sixth lens element 660) havepositive refractive power. When an Abbe number of each of these fourlens elements having positive refractive power is Vp, the followingcondition is satisfied for one (the fifth lens element 650) of thesefour lens elements: Vp<25.0.

When a minimum value among all maximum effective radii of theobject-side surfaces and the image-side surfaces of the seven lenselements is Ymin, a maximum effective radius of the image-side surface632 of the third lens element 630 is equal to Ymin.

The detailed optical data of the 6th embodiment are shown in Table 11and the aspheric surface data are shown in Table 12 below.

TABLE 11 6th Embodiment f = 5.93 mm, Fno = 1.83, HFOV = 21.3 deg.Surface # Curvature Radius Thickness Material Index Abbe # Focal Length0 Object Plano Infinity 1 Ape. Stop Plano −0.802  2 Lens 1 1.967 (ASP)0.930 Plastic 1.534 55.9 3.96 3 23.690 (ASP) 0.050 4 Lens 2 3.674 (ASP)0.472 Glass 1.487 70.2 7.33 5 −126.425 (ASP) 0.075 6 Lens 3 −10.746(ASP) 0.178 Glass 1.755 27.5 −3.16 7 3.095 (ASP) 0.443 8 Lens 4 70.177(ASP) 0.180 Plastic 1.669 19.5 −18.11 9 10.317 (ASP) 0.349 10 Lens 52.633 (ASP) 0.421 Plastic 1.669 19.5 10.19 11 4.015 (ASP) 0.902 12 Lens6 9.536 (ASP) 0.294 Glass 1.755 27.5 14.95 13 60.665 (ASP) 0.652 14 Lens7 −1.685 (ASP) 0.373 Plastic 1.529 45.4 −3.65 15 −14.204 (ASP) 0.250 16Filter Plano 0.110 Glass 1.517 64.2 — 17 Plano 0.173 18 Image Plano —Note: Reference wavelength is 587.6 nm (d-line).

TABLE 12 Aspheric Coefficients Surface # 2 3 4 5 6 k = −1.8206E−01 2.3529E+01 −1.5019E+01  9.0000E+01 −6.1720E+01 A4 = −5.0385E−05−8.2369E−03  2.2467E−02 −4.6204E−02 −9.1202E−02 A6 =  3.3451E−03−7.2660E−03 −2.5431E−02  4.6170E−02  1.9498E−01 A8 = −2.1918E−03 9.4236E−03 −6.9536E−03 −7.2326E−03 −1.7582E−01 A10 =  5.8412E−04−3.1218E−03  2.6764E−02 −1.7461E−02  8.9495E−02 A12 = −5.0646E−05 3.7431E−04 −1.5292E−02  1.2986E−02 −2.4155E−02 A14 = — —  3.4390E−03−3.9244E−03  2.6070E−03 A16 = — — −2.7422E−04  4.5503E−04 — Surface # 78 9 10 11 k = −1.6757E+01 2.6611E+00 −2.6063E+01 −9.3002E−02  3.3337E−01A4 =  1.7638E−02 4.7200E−02  6.5643E−02 −2.1662E−02 −2.5604E−02 A6 = 5.5521E−02 −2.2380E−01  −2.2127E−01 −1.3741E−02  1.0987E−02 A8 =−3.1786E−02 2.5627E−01  2.7089E−01  2.8019E−02 −4.1118E−03 A10 =−9.3148E−03 −1.0974E−01  −1.2780E−01 −9.7175E−03  9.8497E−03 A12 = 2.8710E−02 1.7724E−02  2.1793E−02  9.5946E−04 −3.1713E−03 A14 =−8.0720E−03 −2.2628E−04  −2.4710E−04 — — Surface # 12 13 14 15 k =−7.7551E+00 −2.5409E+00 −8.0953E+00 −2.6636E+01 A4 = −5.4423E−02−5.6977E−02 −4.1539E−01 −3.7458E−01 A6 = −4.9967E−02 −4.9032E−02 2.9647E−01  2.9957E−01 A8 =  3.8939E−02  4.7407E−02 −3.9602E−02−1.2617E−01 A10 = −3.2849E−02 −3.5899E−02 −7.4956E−02  3.2827E−02 A12 = 9.5897E−03  1.2306E−02  5.0024E−02 −6.0445E−03 A14 = −3.1966E−04−1.6989E−03 −1.2702E−02  7.8153E−04 A16 = —  1.6244E−04  1.1998E−03−5.1934E−05

In the 6th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 6th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 11 and Table 12as the following values and satisfy the following conditions:

6th Embodiment f [mm] 5.93 SD/TD 0.85 Fno 1.83 TL/f 0.99 HFOV [deg.]21.3 TL/ImgH 2.44 V7 45.4 f/ImgH 2.47 ΣVi 265.5 f/EPD 1.83 R1/CT1 2.12TL/EPD 1.81 CT1/CT7 2.49 BL/TD 0.10 T67/CT6 2.22 tan(HFOV) 0.39 T23/T340.17 Yc62/CT6 0.88 f/R1 3.01 (R1 × R1)/(f × CT1) 0.70 f/R12 0.10T56/(ΣAT − T56) 0.57 |f/R14| 0.42 TL/(EPD + T56) 1.41 (R13 − R14)/(R13 +R14) −0.79 EPD/(ΣCT − CT1) 1.69 f/f2 0.81 (f × TL)/(EPD × ImgH) 4.47f/f7 −1.62 — —

FIG. 13 is a schematic view of an image capturing unit according to the7th embodiment of the present disclosure. FIG. 14 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 7thembodiment. In FIG. 13 , the image capturing unit includes the opticalimaging lens assembly (its reference numeral is omitted) of the presentdisclosure and an image sensor 795. The optical imaging lens assemblyincludes, in order from an object side to an image side, an aperturestop 700, a first lens element 710, a second lens element 720, a thirdlens element 730, a fourth lens element 740, a fifth lens element 750, asixth lens element 760, a seventh lens element 770, a filter 780 and animage surface 790. The optical imaging lens assembly includes seven lenselements (710, 720, 730, 740, 750, 760 and 770) with no additional lenselement disposed between each of the adjacent seven lens elements.

The first lens element 710 with positive refractive power has anobject-side surface 711 being convex in a paraxial region thereof and animage-side surface 712 being convex in a paraxial region thereof. Thefirst lens element 710 is made of plastic material and has theobject-side surface 711 and the image-side surface 712 being bothaspheric. The image-side surface 712 of the first lens element 710 hasone inflection point.

The second lens element 720 with negative refractive power has anobject-side surface 721 being convex in a paraxial region thereof and animage-side surface 722 being concave in a paraxial region thereof. Thesecond lens element 720 is made of plastic material and has theobject-side surface 721 and the image-side surface 722 being bothaspheric.

The third lens element 730 with negative refractive power has anobject-side surface 731 being convex in a paraxial region thereof and animage-side surface 732 being concave in a paraxial region thereof. Thethird lens element 730 is made of plastic material and has theobject-side surface 731 and the image-side surface 732 being bothaspheric. The object-side surface 731 of the third lens element 730 hasthree inflection points.

The fourth lens element 740 with negative refractive power has anobject-side surface 741 being convex in a paraxial region thereof and animage-side surface 742 being concave in a paraxial region thereof. Thefourth lens element 740 is made of plastic material and has theobject-side surface 741 and the image-side surface 742 being bothaspheric. The object-side surface 741 of the fourth lens element 740 hasthree inflection points.

The fifth lens element 750 with negative refractive power has anobject-side surface 751 being convex in a paraxial region thereof and animage-side surface 752 being concave in a paraxial region thereof. Thefifth lens element 750 is made of plastic material and has theobject-side surface 751 and the image-side surface 752 being bothaspheric. The image-side surface 752 of the fifth lens element 750 hasone inflection point.

The sixth lens element 760 with positive refractive power has anobject-side surface 761 being concave in a paraxial region thereof andan image-side surface 762 being convex in a paraxial region thereof. Thesixth lens element 760 is made of plastic material and has theobject-side surface 761 and the image-side surface 762 being bothaspheric. Each of the object-side surface 761 and the image-side surface762 of the sixth lens element 760 has one inflection point.

The seventh lens element 770 with negative refractive power has anobject-side surface 771 being convex in a paraxial region thereof and animage-side surface 772 being concave in a paraxial region thereof. Theseventh lens element 770 is made of plastic material and has theobject-side surface 771 and the image-side surface 772 being bothaspheric. Each of the object-side surface 771 and the image-side surface772 of the seventh lens element 770 has one inflection point.

The filter 780 is made of glass material and located between the seventhlens element 770 and the image surface 790, and will not affect thefocal length of the optical imaging lens assembly. The image sensor 795is disposed on or near the image surface 790 of the optical imaging lensassembly.

Among the first lens element 710 through the seventh lens element 770,two lens elements (the first lens element 710 and the sixth lens element760) have positive refractive power. When an Abbe number of each ofthese two lens elements having positive refractive power is Vp, thefollowing condition is satisfied for one (the sixth lens element 760) ofthese two lens elements: Vp<25.0.

When a minimum value among all maximum effective radii of theobject-side surfaces and the image-side surfaces of the seven lenselements is Ymin, a maximum effective radius of the image-side surface732 of the third lens element 730 is equal to Ymin.

The detailed optical data of the 7th embodiment are shown in Table 13and the aspheric surface data are shown in Table 14 below.

TABLE 13 7th Embodiment f = 6.39 mm, Fno = 1.82, HFOV = 19.6 deg.Surface # Curvature Radius Thickness Material Index Abbe # Focal Length0 Object Plano Infinity 1 Ape. Stop Plano −0.909  2 Lens 1 2.095 (ASP)1.325 Plastic 1.534 55.9 3.86 3 −94.432 (ASP) 0.223 4 Lens 2 7.856 (ASP)0.235 Plastic 1.660 20.4 −27.73 5 5.431 (ASP) 0.205 6 Lens 3 18.305(ASP) 0.161 Plastic 1.695 17.7 −9.53 7 4.845 (ASP) 0.320 8 Lens 4 63.136(ASP) 0.253 Plastic 1.688 18.7 −14.76 9 8.732 (ASP) 0.057 10 Lens 57.183 (ASP) 0.161 Plastic 1.695 17.7 −167.42 11 6.704 (ASP) 0.873 12Lens 6 −312.500 (ASP) 0.549 Plastic 1.688 18.7 7.18 13 −4.869 (ASP)0.735 14 Lens 7 89.286 (ASP) 0.316 Plastic 1.529 45.4 −5.65 15 2.887(ASP) 0.386 16 Filter Plano 0.110 Glass 1.517 64.2 — 17 Plano 0.545 18Image Plano — Note: Reference wavelength is 587.6 nm (d-line).

TABLE 14 Aspheric Coefficients Surface # 2 3 4 5 6 k = −1.7362E−01−9.0000E+01 −6.7460E+01 −4.1429E+01 −6.1720E+01 A4 =  3.8170E−04 4.5427E−03 −9.5630E−03 −1.1446E−02 −1.5957E−02 A6 =  1.0044E−03 2.3914E−03  7.8842E−03 −2.9957E−02 −4.5981E−02 A8 = −4.3383E−04−7.1639E−04  3.9243E−03  6.6998E−02  1.2702E−01 A10 =  1.6118E−04−1.6157E−04  1.2498E−03 −4.2177E−02 −1.2083E−01 A12 = −1.2772E−05 5.7782E−05 −7.3930E−03  5.1685E−04  5.4741E−02 A14 = — —  4.0396E−03 7.9096E−03 −9.7476E−03 A16 = — — −6.3294E−04 −1.9271E−03 — Surface # 78 9 10 11 k = −2.2783E+01  2.5645E+00 −2.8709E+01 2.4541E+00 −7.6453E−01A4 =  2.6746E−02 −4.8283E−02 −6.9702E−02 −4.4539E−02  −1.2170E−03 A6 =−3.5181E−02  9.6039E−02  1.9342E−01 6.7099E−02 −2.4544E−02 A8 = 1.1400E−01 −9.5603E−02 −1.9463E−01 −4.2421E−02   3.8678E−02 A10 =−1.2446E−01  5.0627E−02  9.5142E−02 1.0635E−02 −1.2949E−02 A12 = 7.5083E−02 −4.0517E−03 −1.8223E−02 — — A14 = −1.7299E−02 −2.8957E−03 9.4324E−04 — — Surface # 12 13 14 15 k =  7.4649E+01 −2.5409E+00−8.0953E+00 −2.5493E+01 A4 = −1.5054E−02 −1.7423E−02 −2.1383E−01−1.1508E−01 A6 = −1.3138E−02 −1.7187E−03  1.8440E−01  8.5021E−02 A8 = 8.5432E−03 −1.8568E−03 −1.2539E−01 −4.9411E−02 A10 = −9.2487E−03−3.1682E−03  5.6104E−02  1.8211E−02 A12 =  4.3017E−03  2.5942E−03−1.6013E−02 −4.1707E−03 A14 = −5.9310E−04 −7.8345E−04  2.6405E−03 5.3489E−04 A16 = —  1.0427E−04 −1.9025E−04 −2.9397E−05

In the 7th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 7th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 13 and Table 14as the following values and satisfy the following conditions:

7th Embodiment f [mm] 6.39 SD/TD 0.83 Fno 1.82 TL/f 1.01 HFOV [deg.]19.6 TL/ImgH 2.77 V7 45.4 f/ImgH 2.74 ΣVi 194.5 f/EPD 1.82 R1/CT1 1.58TL/EPD 1.84 CT1/CT7 4.19 BL/TD 0.19 T67/CT6 1.34 tan(HFOV) 0.37 T23/T340.64 Yc62/CT6 — f/R1 3.05 (R1 × R1)/(f × CT1) 0.52 f/R12 −1.31 T56/(ΣAT− T56) 0.57 |f/R14| 2.21 TL/(EPD + T56) 1.47 (R13 − R14)/(R13 + R14)0.94 EPD/(ΣCT − CT1) 2.10 f/f2 −0.23 (f × TL)/(EPD × ImgH) 5.04 f/f7−1.13 — —

8th Embodiment

FIG. 15 is a schematic view of an image capturing unit according to the8th embodiment of the present disclosure. FIG. 16 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 8thembodiment. In FIG. 15 , the image capturing unit includes the opticalimaging lens assembly (its reference numeral is omitted) of the presentdisclosure and an image sensor 895. The optical imaging lens assemblyincludes, in order from an object side to an image side, a first lenselement 810, an aperture stop 800, a second lens element 820, a thirdlens element 830, a stop 801, a fourth lens element 840, a fifth lenselement 850, a sixth lens element 860, a seventh lens element 870, afilter 880 and an image surface 890. The optical imaging lens assemblyincludes seven lens elements (810, 820, 830, 840, 850, 860 and 870) withno additional lens element disposed between each of the adjacent sevenlens elements.

The first lens element 810 with positive refractive power has anobject-side surface 811 being convex in a paraxial region thereof and animage-side surface 812 being convex in a paraxial region thereof. Thefirst lens element 810 is made of plastic material and has theobject-side surface 811 and the image-side surface 812 being bothaspheric. The image-side surface 812 of the first lens element 810 hasone inflection point.

The second lens element 820 with negative refractive power has anobject-side surface 821 being convex in a paraxial region thereof and animage-side surface 822 being concave in a paraxial region thereof. Thesecond lens element 820 is made of plastic material and has theobject-side surface 821 and the image-side surface 822 being bothaspheric. The object-side surface 821 of the second lens element 820 hastwo inflection points.

The third lens element 830 with positive refractive power has anobject-side surface 831 being convex in a paraxial region thereof and animage-side surface 832 being concave in a paraxial region thereof. Thethird lens element 830 is made of plastic material and has theobject-side surface 831 and the image-side surface 832 being bothaspheric. The image-side surface 832 of the third lens element 830 hasone inflection point.

The fourth lens element 840 with negative refractive power has anobject-side surface 841 being convex in a paraxial region thereof and animage-side surface 842 being concave in a paraxial region thereof. Thefourth lens element 840 is made of plastic material and has theobject-side surface 841 and the image-side surface 842 being bothaspheric. The object-side surface 841 of the fourth lens element 840 hasone inflection point. The image-side surface 842 of the fourth lenselement 840 has two inflection points.

The fifth lens element 850 with positive refractive power has anobject-side surface 851 being convex in a paraxial region thereof and animage-side surface 852 being convex in a paraxial region thereof. Thefifth lens element 850 is made of plastic material and has theobject-side surface 851 and the image-side surface 852 being bothaspheric. The object-side surface 851 of the fifth lens element 850 hasthree inflection points. The image-side surface 852 of the fifth lenselement 850 has two inflection points.

The sixth lens element 860 with negative refractive power has anobject-side surface 861 being convex in a paraxial region thereof and animage-side surface 862 being concave in a paraxial region thereof. Thesixth lens element 860 is made of plastic material and has theobject-side surface 861 and the image-side surface 862 being bothaspheric. The object-side surface 861 of the sixth lens element 860 hasthree inflection points. The image-side surface 862 of the sixth lenselement 860 has two inflection points. The image-side surface 862 of thesixth lens element 860 has at least one critical point.

The seventh lens element 870 with negative refractive power has anobject-side surface 871 being concave in a paraxial region thereof andan image-side surface 872 being convex in a paraxial region thereof. Theseventh lens element 870 is made of plastic material and has theobject-side surface 871 and the image-side surface 872 being bothaspheric. Each of the object-side surface 871 and the image-side surface872 of the seventh lens element 870 has three inflection points.

The filter 880 is made of glass material and located between the seventhlens element 870 and the image surface 890, and will not affect thefocal length of the optical imaging lens assembly. The image sensor 895is disposed on or near the image surface 890 of the optical imaging lensassembly.

Among the first lens element 810 through the seventh lens element 870,three lens elements (the first lens element 810, the third lens element830 and the fifth lens element 850) have positive refractive power. Whenan Abbe number of each of these three lens elements having positiverefractive power is Vp, the following condition is satisfied for two(the third lens element 830 and the fifth lens element 850) of thesethree lens elements: Vp<25.0.

When a minimum value among all maximum effective radii of theobject-side surfaces and the image-side surfaces of the seven lenselements is Ymin, a maximum effective radius of the object-side surface841 of the fourth lens element 840 is equal to Ymin.

The detailed optical data of the 8th embodiment are shown in Table 15and the aspheric surface data are shown in Table 16 below.

TABLE 15 8th Embodiment f = 6.86 mm, Fno = 1.57, HFOV = 23.3 deg.Surface # Curvature Radius Thickness Material Index Abbe # Focal Length0 Object Plano Infinity 1 Lens 1 2.307 (ASP) 1.699 Plastic 1.545 56.14.00 2 −29.740 (ASP) 0.113 3 Ape. Stop Plano 0.100 4 Lens 2 4.324 (ASP)0.183 Plastic 1.669 19.5 −5.99 5 2.045 (ASP) 0.396 6 Lens 3 6.819 (ASP)0.420 Plastic 1.639 23.5 67.13 7 7.914 (ASP) 0.117 8 Stop Plano 0.452 9Lens 4 38.854 (ASP) 0.180 Plastic 1.639 23.5 −29.70 10 12.723 (ASP)0.113 11 Lens 5 14.862 (ASP) 0.346 Plastic 1.688 18.7 18.87 12 −101.516(ASP) 0.987 13 Lens 6 2.041 (ASP) 0.293 Plastic 1.544 55.9 −15.51 141.560 (ASP) 0.641 15 Lens 7 −3.393 (ASP) 0.510 Plastic 1.688 18.7 −6.5716 −14.468 (ASP) 0.150 17 Filter Plano 0.145 Glass 1.517 64.2 — 18 Plano0.128 19 Image Plano — Note: Reference wavelength is 587.6 nm (d-line).An effective radius of the stop 801 (Surface 8) is 1.517 mm.

TABLE 16 Aspheric Coefficients Surface # 1 2 4 5 6 k = −2.4349E−01−7.1074E+01  −8.3221E+01 −1.0974E+01  1.0323E+00 A4 =  1.8381E−045.0699E−03 −7.2283E−02 −5.0437E−02 −2.1641E−02 A6 =  1.5589E−037.2983E−03  9.4348E−02  9.4688E−02  2.7527E−02 A8 = −6.2796E−04−5.3385E−03  −6.2117E−02 −5.2925E−02 −5.0228E−03 A10 =  1.6691E−041.6028E−03  2.2832E−02  1.4449E−02 −3.2999E−03 A12 = −1.4584E−05−2.3253E−04  −4.3188E−03 −7.8530E−04  2.1355E−03 A14 = — 1.3419E−05 3.2848E−04  6.4354E−08 −2.6728E−04 Surface # 7 9 10 11 12 k =7.6871E+00 −3.8499E+00 −8.2589E+01 4.5136E+01 −5.2935E+01 A4 =−9.7771E−03  −2.6212E−02 −3.2120E−02 −7.5470E−02  −7.0480E−02 A6 =7.0858E−03 −5.0726E−02  2.5092E−02 8.0588E−02  5.5500E−02 A8 =2.4163E−03  3.0189E−02 −5.8777E−02 −3.2961E−02  −1.9525E−02 A10 =−6.4790E−03  −3.3332E−02  5.9311E−02 7.2988E−03  5.0593E−03 A12 =2.3734E−03  3.0469E−02 −2.8469E−02 −8.1343E−04  −7.8712E−04 A14 =−3.0344E−04  −1.3608E−02  6.7903E−03 2.8196E−05  4.6972E−05 A16 =1.6125E−08  2.1884E−03 −6.4499E−04 — — Surface # 13 14 15 16 k =−6.0377E+00 −2.0587E+00 −3.9112E+01 −3.4406E+01 A4 = −1.0313E−01−1.3053E−01 −1.6300E−01 −2.5810E−01 A6 = −2.2255E−02  1.7678E−02 1.3614E−01  1.7304E−01 A8 =  2.1640E−02  1.2143E−02 −5.0711E−02−5.5964E−02 A10 = −3.2397E−03 −7.0117E−03  1.0352E−02  1.0378E−02 A12 =−5.3545E−04  1.5980E−03 −1.2430E−03 −1.1605E−03 A14 =  1.8216E−04−1.7804E−04  8.3892E−05  7.4008E−05 A16 = −1.2919E−05  7.9138E−06−2.4550E−06 −2.0657E−06

In the 8th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 8th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 15 and Table 16as the following values and satisfy the following conditions:

8th Embodiment f [mm] 6.86 SD/TD 0.72 Fno 1.57 TL/f 1.02 HFOV [deg.]23.3 TL/ImgH 2.25 V7 18.7 f/ImgH 2.21 ΣVi 215.8 f/EPD 1.57 R1/CT1 1.36TL/EPD 1.60 CT1/CT7 3.33 BL/TD 0.06 T67/CT6 2.19 tan(HFOV) 0.43 T23/T340.70 Yc62/CT6 4.57 f/R1 2.97 (R1 × R1)/(f × CT1) 0.46 f/R12 4.40T56/(ΣAT − T56) 0.51 |f/R14| 0.47 TL/(EPD + T56) 1.30 (R13 − R14)/(R13 +R14) −0.62 EPD/(ΣCT − CT1) 2.26 f/f2 −1.14 (f × TL)/(EPD × ImgH) 3.53f/f7 −1.05 — —

9th Embodiment

FIG. 17 is a schematic view of an image capturing unit according to the9th embodiment of the present disclosure. FIG. 18 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 9thembodiment. In FIG. 17 , the image capturing unit includes the opticalimaging lens assembly (its reference numeral is omitted) of the presentdisclosure and an image sensor 995. The optical imaging lens assemblyincludes, in order from an object side to an image side, an aperturestop 900, a first lens element 910, a second lens element 920, a thirdlens element 930, a fourth lens element 940, a fifth lens element 950, asixth lens element 960, a seventh lens element 970, a filter 980 and animage surface 990. The optical imaging lens assembly includes seven lenselements (910, 920, 930, 940, 950, 960 and 970) with no additional lenselement disposed between each of the adjacent seven lens elements.

The first lens element 910 with positive refractive power has anobject-side surface 911 being convex in a paraxial region thereof and animage-side surface 912 being convex in a paraxial region thereof. Thefirst lens element 910 is made of glass material and has the object-sidesurface 911 and the image-side surface 912 being both aspheric. Theimage-side surface 912 of the first lens element 910 has one inflectionpoint.

The second lens element 920 with negative refractive power has anobject-side surface 921 being concave in a paraxial region thereof andan image-side surface 922 being concave in a paraxial region thereof.The second lens element 920 is made of plastic material and has theobject-side surface 921 and the image-side surface 922 being bothaspheric. The object-side surface 921 of the second lens element 920 hasone inflection point.

The third lens element 930 with negative refractive power has anobject-side surface 931 being concave in a paraxial region thereof andan image-side surface 932 being convex in a paraxial region thereof. Thethird lens element 930 is made of plastic material and has theobject-side surface 931 and the image-side surface 932 being bothaspheric. The object-side surface 931 of the third lens element 930 hasone inflection point. The image-side surface 932 of the third lenselement 930 has three inflection points.

The fourth lens element 940 with positive refractive power has anobject-side surface 941 being concave in a paraxial region thereof andan image-side surface 942 being convex in a paraxial region thereof. Thefourth lens element 940 is made of plastic material and has theobject-side surface 941 and the image-side surface 942 being bothaspheric.

The fifth lens element 950 with negative refractive power has anobject-side surface 951 being concave in a paraxial region thereof andan image-side surface 952 being convex in a paraxial region thereof. Thefifth lens element 950 is made of plastic material and has theobject-side surface 951 and the image-side surface 952 being bothaspheric. The image-side surface 952 of the fifth lens element 950 hasone inflection point.

The sixth lens element 960 with negative refractive power has anobject-side surface 961 being convex in a paraxial region thereof and animage-side surface 962 being concave in a paraxial region thereof. Thesixth lens element 960 is made of plastic material and has theobject-side surface 961 and the image-side surface 962 being bothaspheric. The object-side surface 961 of the sixth lens element 960 hastwo inflection points. The image-side surface 962 of the sixth lenselement 960 has one inflection point. The image-side surface 962 of thesixth lens element 960 has at least one critical point.

The seventh lens element 970 with positive refractive power has anobject-side surface 971 being convex in a paraxial region thereof and animage-side surface 972 being concave in a paraxial region thereof. Theseventh lens element 970 is made of plastic material and has theobject-side surface 971 and the image-side surface 972 being bothaspheric. The object-side surface 971 of the seventh lens element 970has three inflection points. The image-side surface 972 of the seventhlens element 970 has two inflection points.

The filter 980 is made of glass material and located between the seventhlens element 970 and the image surface 990, and will not affect thefocal length of the optical imaging lens assembly. The image sensor 995is disposed on or near the image surface 990 of the optical imaging lensassembly.

Among the first lens element 910 through the seventh lens element 970,three lens elements (the first lens element 910, the fourth lens element940 and the seventh lens element 970) have positive refractive power.When an Abbe number of each of these three lens elements having positiverefractive power is Vp, the following condition is satisfied for two(the fourth lens element 940 and the seventh lens element 970) of thesethree lens elements: Vp<25.0.

When a minimum value among all maximum effective radii of theobject-side surfaces and the image-side surfaces of the seven lenselements is Ymin, a maximum effective radius of the object-side surface941 of the fourth lens element 940 is equal to Ymin.

The detailed optical data of the 9th embodiment are shown in Table 17and the aspheric surface data are shown in Table 18 below.

TABLE 17 9th Embodiment f = 5.76 mm, Fno = 1.78, HFOV = 21.5 deg.Surface # Curvature Radius Thickness Material Index Abbe # Focal Length0 Object Plano Infinity 1 Ape. Stop Plano −0.999  2 Lens 1 1.732 (ASP)1.256 Glass 1.518 63.5 2.81 3 −6.768 (ASP) 0.200 4 Lens 2 −104.728 (ASP)0.160 Plastic 1.614 26.0 −4.24 5 2.673 (ASP) 0.326 6 Lens 3 −9.714 (ASP)0.315 Plastic 1.582 30.2 −24.48 7 −30.847 (ASP) 0.336 8 Lens 4 −19.415(ASP) 0.180 Plastic 1.639 23.5 12.45 9 −5.661 (ASP) 0.153 10 Lens 5−3.234 (ASP) 0.203 Plastic 1.669 19.5 −20.07 11 −4.368 (ASP) 0.885 12Lens 6 5.136 (ASP) 0.190 Plastic 1.511 56.8 −6.19 13 1.933 (ASP) 0.08914 Lens 7 3.983 (ASP) 0.427 Plastic 1.669 19.5 16.56 15 5.951 (ASP)0.200 16 Filter Plano 0.110 Glass 1.517 64.2 — 17 Plano 0.673 18 ImagePlano — Note: Reference wavelength is 587.6 nm (d-line).

TABLE 18 Aspheric Coefficients Surface # 2 3 4 5 6 k = −2.0746E−01−4.5914E+01  9.0000E+01 −1.1073E+01  2.2891E+00 A4 = −8.2364E−048.0345E−03 −1.3700E−01  −1.2245E−01 −3.4585E−02 A6 =  5.1665E−032.7901E−02 3.6722E−01  3.7536E−01  1.2019E−01 A8 = −4.2423E−03−3.3501E−02  −4.1742E−01  −3.3932E−01 −1.9708E−02 A10 =  2.0452E−031.8529E−02 2.5868E−01  1.6509E−01 −3.5019E−02 A12 = −3.3624E−04−5.2649E−03  −8.4844E−02  −2.3462E−02  2.6237E−02 A14 = — 6.1203E−041.1549E−02 — −1.4625E−03 Surface # 7 8 9 10 11 k = −9.0000E+01 4.5884E+01 1.9482E+01 5.7152E+00 9.0187E+00 A4 = −9.8184E−03−2.9792E−02 3.3285E−02 −9.1490E−02  −1.2016E−01  A6 =  2.4530E−02−2.9388E−01 −1.4909E−01  2.9311E−01 2.3080E−01 A8 =  4.4244E−02 5.3268E−01 3.4810E−01 −2.8218E−01  −2.5641E−01  A10 = −7.6333E−02−7.0935E−01 −4.5788E−01  1.5473E−01 1.8314E−01 A12 =  2.8412E−02 4.8042E−01 2.8896E−01 −7.2750E−02  −8.4681E−02  A14 = −5.7461E−04−1.3189E−01 −6.7195E−02  2.1470E−02 1.8956E−02 A16 = —  7.2341E−059.2246E−06 — — Surface # 12 13 14 15 k = −5.0000E+01 −2.3093E+00−1.3626E+01 −2.1553E+01 A4 = −2.2512E−01 −2.5697E−01 −1.0498E−01−1.2316E−01 A6 =  1.0410E−01  1.6309E−01  9.5040E−02  1.0434E−01 A8 = 7.9086E−03 −6.5277E−02 −6.2430E−02 −6.3984E−02 A10 = −3.6112E−02 1.2194E−02  2.5491E−02  2.4582E−02 A12 =  1.6869E−02 −1.9562E−04−5.9930E−03 −5.5156E−03 A14 = −3.2125E−03 −2.5820E−04  7.5543E−04 6.7085E−04 A16 =  2.2500E−04  2.6762E−05 −3.9951E−05 −3.4433E−05

In the 9th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 9th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 17 and Table 18as the following values and satisfy the following conditions:

9th Embodiment f [mm] 5.76 SD/TD 0.79 Fno 1.78 TL/f 0.99 HFOV [deg.]21.5 TL/ImgH 2.46 V7 19.5 f/ImgH 2.48 ΣVi 238.9 f/EPD 1.78 R1/CT1 1.38TL/EPD 1.76 CT1/CT7 2.94 BL/TD 0.21 T67/CT6 0.47 tan(HFOV) 0.39 T23/T340.97 Yc62/CT6 5.16 f/R1 3.33 (R1 × R1)/(f × CT1) 0.41 f/R12 2.98T56/(ΣAT − T56) 0.80 |f/R14| 0.97 TL/(EPD + T56) 1.38 (R13 − R14)/(R13 +R14) −0.20 EPD/(ΣCT − CT1) 2.19 f/f2 −1.36 (f × TL)/(EPD × ImgH) 4.38f/f7 0.35 — —

FIG. 19 is a perspective view of an image capturing unit according tothe 10th embodiment of the present disclosure. In this embodiment, animage capturing unit 10 is a camera module including a lens unit 11, adriving device 12, an image sensor 13 and an image stabilizer 14. Thelens unit 11 includes the optical imaging lens assembly disclosed in the1st embodiment, a barrel and a holder member (their reference numeralsare omitted) for holding the optical imaging lens assembly. The imaginglight converges in the lens unit 11 of the image capturing unit 10 togenerate an image with the driving device 12 utilized for image focusingon the image sensor 13, and the generated image is then digitallytransmitted to other electronic component for further processing.

The driving device 12 can have auto focusing functionality, anddifferent driving configurations can be obtained through the usages ofvoice coil motors (VCM), micro electro-mechanical systems (MEMS),piezoelectric systems, or shape memory alloy materials. The drivingdevice 12 is favorable for obtaining a better imaging position of thelens unit 11, so that a clear image of the imaged object can be capturedby the lens unit 11 with different object distances. The image sensor 13(for example, CCD or CMOS), which can feature high photosensitivity andlow noise, is disposed on the image surface of the optical imaging lensassembly to provide higher image quality.

The image stabilizer 14, such as an accelerometer, a gyro sensor and aHall Effect sensor, is configured to work with the driving device 12 toprovide optical image stabilization (01S). The driving device 12 workingwith the image stabilizer 14 is favorable for compensating for pan andtilt of the lens unit 11 to reduce blurring associated with motionduring exposure. In some cases, the compensation can be provided byelectronic image stabilization (EIS) with image processing software,thereby improving image quality while in motion or low-light conditions.

11th Embodiment

FIG. 20 is one perspective view of an electronic device according to the11th embodiment of the present disclosure. FIG. 21 is anotherperspective view of the electronic device in FIG. 20 . FIG. 22 is ablock diagram of the electronic device in FIG. 20 .

In this embodiment, an electronic device 20 is a smartphone includingthe image capturing unit 10 disclosed in the 10th embodiment, a flashmodule 21, a focus assist module 22, an image signal processor 23, auser interface 24, an image software processor 25 and additional twoimage capturing units 10 a and 10 b. The image capturing unit 10features telephoto effect with small field of view. The image capturingunit 10 a features wide angle effect with large field of view, and theimage capturing unit 10 b has a field of view between that of the imagecapturing unit 10 and that of the image capturing unit 10 a. In thisembodiment, the electronic device 20 includes multiple image capturingunits, but the disclosure is not limited thereto.

When a user captures images of an object 26, the light rays converge inthe image capturing unit 10 to generate an image, and the flash module21 is activated for light supplement. The focus assist module 22 detectsthe object distance of the imaged object 26 to achieve fast autofocusing. The image signal processor 23 is configured to optimize thecaptured image to improve image quality. The light beam emitted from thefocus assist module 22 can be either conventional infrared or laser. Theuser interface 24 can be a touch screen or a physical button. The useris able to interact with the user interface 24 and the image softwareprocessor 25 having multiple functions to capture images and completeimage processing. The image processed by the image software processor 25can be displayed on the user interface 24.

The smartphone in this embodiment is only exemplary for showing theimage capturing unit 10 of the present disclosure installed in anelectronic device, and the present disclosure is not limited thereto.The image capturing unit 10 can be optionally applied to optical systemswith a movable focus. Furthermore, the optical imaging lens assembly ofthe image capturing unit 10 features good capability in aberrationcorrections and high image quality, and can be applied to 3D(three-dimensional) image capturing applications, in products such asdigital cameras, mobile devices, digital tablets, smart televisions,network surveillance devices, dashboard cameras, vehicle backup cameras,multi-camera devices, image recognition systems, motion sensing inputdevices, wearable devices and other electronic imaging devices.

The foregoing description, for the purpose of explanation, has beendescribed with reference to specific embodiments. It is to be noted thatTABLES 1-18 show different data of the different embodiments; however,the data of the different embodiments are obtained from experiments. Theembodiments were chosen and described in order to best explain theprinciples of the disclosure and its practical applications, to therebyenable others skilled in the art to best utilize the disclosure andvarious embodiments with various modifications as are suited to theparticular use contemplated. The embodiments depicted above and theappended drawings are exemplary and are not intended to be exhaustive orto limit the scope of the present disclosure to the precise formsdisclosed. Many modifications and variations are possible in view of theabove teachings.

What is claimed is:
 1. An optical imaging lens assembly comprising sevenlens elements, the seven lens elements being, in order from an objectside to an image side, a first lens element, a second lens element, athird lens element, a fourth lens element, a fifth lens element, a sixthlens element and a seventh lens element; each of the seven lens elementshaving an object-side surface facing toward the object side and animage-side surface facing toward the image side; wherein the first lenselement has positive refractive power, the seventh lens element hasnegative refractive power, the object-side surface of the seventh lenselement is concave in a paraxial region thereof, at least one surfaceamong the object-side surfaces and the image-side surfaces of the sevenlens elements has at least one inflection point, each of at least two ofthe seven lens elements has an Abbe number smaller than 20.0, and anabsolute value of a curvature radius of the object-side surface of theseventh lens element is smaller than an absolute value of a curvatureradius of the image-side surface of the seventh lens element; wherein anaxial distance between the image-side surface of the seventh lenselement and an image surface is BL, an axial distance between theobject-side surface of the first lens element and the image-side surfaceof the seventh lens element is TD, and the following condition issatisfied:0<BL/TD<0.35.
 2. The optical imaging lens assembly of claim 1, whereinthe object-side surface of the first lens element is convex in aparaxial region thereof, the image-side surface of the first lenselement is concave in a paraxial region thereof, the object-side surfaceof the second lens element is convex in a paraxial region thereof, andthe image-side surface of the second lens element is concave in aparaxial region thereof.
 3. The optical imaging lens assembly of claim1, wherein the second lens element has negative refractive power, andthe sixth lens element has positive refractive power.
 4. The opticalimaging lens assembly of claim 1, wherein the image-side surface of theseventh lens element is convex in a paraxial region thereof.
 5. Theoptical imaging lens assembly of claim 1, wherein the object-sidesurface of the sixth lens element is convex in a paraxial regionthereof, and the image-side surface of the sixth lens element is concavein a paraxial region thereof; wherein a vertical distance between acritical point on the image-side surface of the sixth lens element andan optical axis is Yc62, a central thickness of the sixth lens elementis CT6, and the following condition is satisfied:0.30<Yc62/CT6<7.50.
 6. The optical imaging lens assembly of claim 1,wherein at least one surface of at least one lens element among thefifth lens element, the sixth lens element and the seventh lens elementhas at least one inflection point; wherein a focal length of the opticalimaging lens assembly is f, a curvature radius of the object-sidesurface of the first lens element is R1, and the following condition issatisfied:2.20<f/R1≤3.30.
 7. The optical imaging lens assembly of claim 1, whereinthe axial distance between the image-side surface of the seventh lenselement and the image surface is BL, the axial distance between theobject-side surface of the first lens element and the image-side surfaceof the seventh lens element is TD, and the following condition issatisfied:0.05<BL/TD<0.20.
 8. The optical imaging lens assembly of claim 1,wherein the curvature radius of the object-side surface of the seventhlens element is R13, the curvature radius of the image-side surface ofthe seventh lens element is R14, and the following condition issatisfied:−1.80<(R13−R14)/(R13+R14)<0.50.
 9. The optical imaging lens assembly ofclaim 1, wherein a focal length of the optical imaging lens assembly isf, an axial distance between the object-side surface of the first lenselement and the image surface is TL, an entrance pupil diameter of theoptical imaging lens assembly is EPD, a maximum image height of theoptical imaging lens assembly is ImgH, and the following condition issatisfied:2.0<(f×TL)/(EPD×ImgH)≤3.74.
 10. The optical imaging lens assembly ofclaim 1, wherein a curvature radius of the object-side surface of thefirst lens element is R1, a central thickness of the first lens elementis CT1, and the following condition is satisfied:1.32≤R1/CT1<3.50.
 11. The optical imaging lens assembly of claim 1,wherein a focal length of the optical imaging lens assembly is f, anentrance pupil diameter of the optical imaging lens assembly is EPD, andthe following condition is satisfied:1.0<f/EPD<2.20.
 12. The optical imaging lens assembly of claim 1,wherein an entrance pupil diameter of the optical imaging lens assemblyis EPD, a sum of central thicknesses of the seven lens elements of theoptical imaging lens assembly is ΣCT, a central thickness of the firstlens element is CT1, and the following condition is satisfied:0.50<EPD/(ΣCT−CT1)≤2.30.
 13. The optical imaging lens assembly of claim1, wherein an axial distance between the sixth lens element and theseventh lens element is T67, a central thickness of the sixth lenselement is CT6, and the following condition is satisfied:0.85<T67/CT6<4.0.
 14. The optical imaging lens assembly of claim 1,wherein an axial distance between the sixth lens element and the seventhlens element is T67, a central thickness of the sixth lens element isCT6, and the following condition is satisfied:0.85<T67/CT6≤2.62.
 15. The optical imaging lens assembly of claim 1,wherein a central thickness of the first lens element is CT1, a centralthickness of the seventh lens element is CT7, and the followingcondition is satisfied:1.70<CT1/CT7≤2.49.
 16. The optical imaging lens assembly of claim 1,wherein an Abbe number of the seventh lens element is V7, a focal lengthof the optical imaging lens assembly is f, a focal length of the secondlens element is f2, a focal length of the seventh lens element is f7,and the following conditions are satisfied:V7<30.0;−3.0<f/f2<0.35; and−2.50<f/f7≤−0.49.
 17. The optical imaging lens assembly of claim 1,wherein an axial distance between the sixth lens element and the seventhlens element is larger than the axial distance between the image-sidesurface of the seventh lens element and the image surface; wherein afocal length of the optical imaging lens assembly is f, a focal lengthof the second lens element is f2, and the following condition issatisfied:−1.14≤f/f2<0.35.
 18. The optical imaging lens assembly of claim 1,wherein an axial distance between the sixth lens element and the seventhlens element is maximum among axial distances between every adjacentlens elements of the optical imaging lens assembly; wherein an axialdistance between the object-side surface of the first lens element andthe image surface is TL, a focal length of the optical imaging lensassembly is f, and the following condition is satisfied:0.50<TL/f<1.50.
 19. An image capturing unit, comprising: the opticalimaging lens assembly of claim 1; and an image sensor disposed on theimage surface of the optical imaging lens assembly.
 20. An electronicdevice, comprising: the image capturing unit of claim 19.